Add icon for new cloud layout

pom.xml

@@ -45,7 +45,7 @@
     <properties>
         <changelist>9999-SNAPSHOT</changelist>
         <gitHubRepo>jenkinsci/azure-vm-agents-plugin</gitHubRepo>
-        <jenkins.version>2.361.4</jenkins.version>
+        <jenkins.version>2.394-rc33399.a_9b_e4d03d1fb_</jenkins.version>
         <maven.javadoc.skip>true</maven.javadoc.skip>
         <azure-credentials.version>198.vf9c2fdfde55c</azure-credentials.version>
     </properties>

src/main/java/com/microsoft/azure/vmagent/AzureVMCloud.java

@@ -221,7 +221,22 @@ private Object readResolve() {
         return this;
     }
 
-    @Override
+//    @Override
+    public String getIcon() {
+        return "symbol-azure plugin-azure-vm-agents";
+    }
+
+//    @Override
+    public String getIconClassName() {
+        return getIcon();
+    }
+
+//    @Override
+    public String getIconAltText() {
+        return "Azure";
+    }
+
+        @Override
     public boolean canProvision(CloudState cloudState) {
         final AzureVMAgentTemplate template = AzureVMCloud.this.getAzureAgentTemplate(cloudState.getLabel());
         // return false if there is no template for this label.