Merged PR 379: #2560 - Network_simulator_demo.ipynb cell fixes

## Summary
Some minor changes to the network_simulator_demo jupyter notebook so that all cells run.
I've updated the notebook to use a **very lightly** modified version of the ARCD UC2 network that it has been using.
_I've added a single route into the router_1 route table so that `network.get_node_by_hostname("router_1").route_table.show()` returns something visible. I didn't want to have this within the 'normal' uc2 network. Don't @ me._

![image.png](https://dev.azure.com/ma-dev-uk/b50a61ee-86c4-48bc-9a0b-a67645ba12ee/_apis/git/repositories/2825053e-bd3b-45b2-8680-1281809eefa2/pullRequests/379/attachments/image.png)

Corrected a path typo in `basic_lan_network_example()` so it correctly loads that network config.

## Test process
I've not broken any existing tests, and the notebook now runs with fully populated cells.

## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [X] written **tests** for any new functionality added with this PR
- [X] updated the **documentation** if this PR changes or adds functionality
- [X] written/updated **design docs** if this PR implements new functionality
- [X] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [X] attended to any **TO-DOs** left in the code

Related work items: #2560

src/primaite/simulator/_package_data/network_simulator_demo.ipynb

@@ -7,7 +7,7 @@
    "source": [
     "# PrimAITE Router Simulation Demo\n",
     "\n",
-    "This demo uses the ARCD Use Case 2 Network (seen below) to demonstrate the capabilities of the Network simulator in PrimAITE."
+    "This demo uses a modified version of the ARCD Use Case 2 Network (seen below) to demonstrate the capabilities of the Network simulator in PrimAITE."
    ]
   },
   {
@@ -56,7 +56,7 @@
     "## The Network\n",
     "First let's create our network. The network comes 'pre-packaged' with PrimAITE in the `primaite.simulator.network.networks` module.\n",
     "\n",
-    "> ℹ️ You'll see a bunch of logs associated with parts of the Network that aern't an 'electronic' device on the Network and thus don't have a stsrem to log to. Soon these logs are going to be pushed to a Network Logger so we're not clogging up the PrimAITE application logs."
+    "> ℹ️ You'll see a bunch of logs associated with parts of the Network that aren't an 'electronic' device on the Network and thus don't have a stream to log to. Soon these logs are going to be pushed to a Network Logger so we're not clogging up the PrimAITE application logs."
    ]
   },
   {
@@ -68,7 +68,7 @@
    },
    "outputs": [],
    "source": [
-    "from primaite.simulator.network.networks import arcd_uc2_network"
+    "from primaite.simulator.network.networks import network_simulator_demo_example"
    ]
   },
   {
@@ -80,7 +80,7 @@
    },
    "outputs": [],
    "source": [
-    "network = arcd_uc2_network()"
+    "network = network_simulator_demo_example()"
    ]
   },
   {
@@ -190,7 +190,7 @@
    "id": "15",
    "metadata": {},
    "source": [
-    "Calling `router.router_table.show()` displays the static routes the Router provides."
+    "Calling `router.router_table.show()` displays the static routes the Router provides. "
    ]
   },
   {
@@ -210,7 +210,9 @@
    "id": "17",
    "metadata": {},
    "source": [
-    "Calling `router.sys_log.show()` displays the Router system log. By default, only the last 10 log entries are displayed, this can be changed by passing `last_n=<number of log entries>`."
+    "Calling `router.sys_log.show()` displays the Router system log. By default, only the last 10 log entries are displayed, this can be changed by passing `last_n=<number of log entries>`.\n",
+    "\n",
+    "NB: For `sys_log.show()` to work correctly log files need to be created with a sys_log level of INFO or below."
    ]
   },
   {
@@ -222,7 +224,7 @@
    },
    "outputs": [],
    "source": [
-    "network.get_node_by_hostname(\"router_1\").sys_log.show(last_n=10)"
+    "network.get_node_by_hostname(\"router_1\").sys_log.show()"
    ]
   },
   {
@@ -232,7 +234,7 @@
    "source": [
     "### Switch Nodes\n",
     "\n",
-    "Next we'll inspect the Switch node and some of it's core services."
+    "Next we'll inspect the Switch node and some of its core services."
    ]
   },
   {
@@ -332,7 +334,7 @@
    "id": "29",
    "metadata": {},
    "source": [
-    "Calling `computer.sys_log.show()` displays the Computer/Server system log. By default, only the last 10 log entries are displayed, this can be changed by passing `last_n=<number of log entries>`."
+    "Calling `computer.sys_log.show()` displays the Computer/Server system log. By default, only the last 10 log entries are displayed; this can be changed by passing `last_n=<number of log entries>`."
    ]
   },
   {
@@ -344,7 +346,7 @@
    },
    "outputs": [],
    "source": [
-    "network.get_node_by_hostname(\"security_suite\").sys_log.show()"
+    "network.get_node_by_hostname(\"security_suite\").sys_log.show(last_n=25)"
    ]
   },
   {
@@ -398,7 +400,7 @@
    },
    "outputs": [],
    "source": [
-    "network.get_node_by_hostname(\"client_1\").sys_log.show(15)"
+    "network.get_node_by_hostname(\"client_1\").sys_log.show(last_n=15)"
    ]
   },
   {
@@ -476,7 +478,7 @@
    "id": "43",
    "metadata": {},
    "source": [
-    "Let's attempt to prevent client_2 from being able to ping the web server. First, we'll confirm that it can ping the server first..."
+    "Let's attempt to prevent client_2 from being able to ping the web server. First, we'll confirm that it can ping the server..."
    ]
   },
   {
@@ -496,7 +498,7 @@
    "id": "45",
    "metadata": {},
    "source": [
-    "If we look at the client_2 sys log we can see that the four ICMP echo requests were sent and four ICMP each replies were received:"
+    "If we look at the client_2 sys log we can see that the four ICMP echo requests were sent and four ICMP each replies were received."
    ]
   },
   {
@@ -516,7 +518,7 @@
    "id": "47",
    "metadata": {},
    "source": [
-    "Now we'll add an ACL to block ICMP from 192.168.10.22"
+    "Now we'll add an ACL to block ICMP from 192.168.10.22."
    ]
   },
   {
@@ -556,7 +558,7 @@
    "id": "50",
    "metadata": {},
    "source": [
-    "Now we attempt (and fail) to ping the web server"
+    "Now we attempt (and fail) to ping the web server."
    ]
   },
   {
@@ -576,7 +578,7 @@
    "id": "52",
    "metadata": {},
    "source": [
-    "We can check that the ping was actually sent by client_2 by viewing the sys log"
+    "We can check that the ping was actually sent by client_2 by viewing the sys log."
    ]
   },
   {
@@ -596,7 +598,7 @@
    "id": "54",
    "metadata": {},
    "source": [
-    "We can check the router sys log to see why the traffic was blocked"
+    "We can check the router sys log to see why the traffic was blocked."
    ]
   },
   {