Merge topic 'lbaas'

* changes:
  LBaaS package: improving compatibility with liberty and mitaka releases
  Adding action for retrieving credentials

murano-apps/haproxy-based-lbaas/Classes/HAProxy.yaml

@@ -18,7 +18,7 @@ Namespaces:
 
 Name: HAProxy
 
-Extends: =:LoadBalancer
+Extends: LoadBalancer
 
 Properties:
 

murano-apps/haproxy-based-lbaas/Classes/LoadBalancer.yaml

@@ -38,6 +38,10 @@ Properties:
     Contract: $.class(std:Environment)
     Usage: Runtime
 
+  url:
+    Contract: $.string()
+    Usage: Out
+
 Methods:
   initialize:
     Body:
@@ -67,9 +71,17 @@ Methods:
           - $host: $.instance.floatingIpAddress
         Else:
           - $host: $.instance.ipAddresses[0]
-      - $.environment.reporter.report($this, format('LBaaS is available at http://{0}:{1}{2}', $host, $lbaas.port, $lbaas.path))
+      - $.url: format('http://{0}:{1}{2}', $host, $lbaas.port, $lbaas.path)
+      - $.environment.reporter.report($this, format('LBaaS is available at {0}', $.url))
       - $.setAttr(deployed, true)
 
+  getCredentials:
+    Usage: Action
+    Body:
+      - Return:
+          credentials:
+            uri: $.url
+
   installLoadBalancer:
 
   installLBaaS: