Adding validation for per-service deploy

* check that components names are correct
* check that requested componets are not deployed
* check that all required components already exist/requested

Change-Id: I110eb8cdb8c450e9fd6b6cd8726a27bf1a7d4ac8

fuel_ccp/common/utils.py

@@ -6,6 +6,7 @@ from oslo_log import log as logging
 import yaml
 
 import fuel_ccp
+from fuel_ccp import kubernetes
 
 
 CONF = cfg.CONF
@@ -74,3 +75,13 @@ def get_deploy_components_info():
                     'service_content': service_definition
                 }
     return components_map
+
+
+def get_deployed_components():
+    """Returns set of deployed components."""
+    deployed_daemonsets = kubernetes.list_cluster_daemonsets()
+    deployed_deployments = kubernetes.list_cluster_deployments()
+    deployed_components = set(kubernetes.get_object_names(
+        deployed_daemonsets + deployed_deployments))
+
+    return deployed_components