Adds ability to delete docker applications from the host

Application deletion were supported on DSH/Pod but not exposed
in DockerApplication. Once it became exposed number of bugs in
KubernetesPod and DSH became visible.

Change-Id: I33650936a73994668f72348a909b7a51bae2b98c
Closes-Bug: #1446582
(cherry picked from commit a74293e2b4ed5695737066d9154d51a4170b8a80)

DockerInterfacesLibrary/package/Classes/DockerApplication.yaml

@@ -59,6 +59,16 @@ Methods:
           - $.onInstallationFinish()
 
 
+  destroy:
+    Body:
+      - $.host.deploy()
+      - If: $.getAttr(container, null) != null
+        Then:
+          - $container: $.getContainer()
+          - $.host.deleteContainer($container.name)
+          - $.setAttr(container, null)
+
+
   getConnectionTo:
     Arguments:
       - application:

DockerInterfacesLibrary/package/Classes/DockerContainerHost.yaml

@@ -34,6 +34,7 @@ Methods:
       - name:
           Contract: $.string().notNull()
 
+
   getEndpoints:
     Arguments:
       - applicationName: