Refined network management (#1672)

This PR implements several refinements to the way that NetworkManager
controls the network interface.

- The monitor detects and logs changes to the network address
- The monitor detects and logs changes to the connection and will
reinitialize the connection if needed
- Remove NetworkInterface.java class, which wasn't used anywhere
- Use java.net.NetworkInterface to get IP addresses for any interface
(device)
- Adds a metric for the current IP address (address on the currently
selected interface)

photon-client/src/views/DashboardView.vue

@@ -62,8 +62,8 @@ const arducamWarningShown = computed<boolean>(() => {
 <template>
   <v-container class="pa-3" fluid>
     <v-banner
-      v-model="arducamWarningShown"
       v-if="arducamWarningShown"
+      v-model="arducamWarningShown"
       rounded
       color="red"
       dark
@@ -86,7 +86,7 @@ const arducamWarningShown = computed<boolean>(() => {
     <PipelineConfigCard />
 
     <!-- TODO - not sure this belongs here -->
-    <v-dialog :persistent="false" v-model="warningShown" v-if="warningShown" max-width="800" dark>
+    <v-dialog v-if="warningShown" v-model="warningShown" :persistent="false" max-width="800" dark>
       <v-card dark flat color="primary">
         <v-card-title>Setup some cameras to get started!</v-card-title>
         <v-card-text>