Allow to specify parameters for action

User can define parameters in action in the following format:

  action:
    parameters:
      - key: some_param
        default_value: value

These parameters can be override using --parameter option. For example:

  ccp action run tempest --parameter tests-set=full

Parameters can be used in config files using the following template:

  {{ action_parameters.some_key }}

Change-Id: I433624acd210ade57fa4d506e988fb6521cc738d

fuel_ccp/action.py

@@ -31,6 +31,7 @@ class Action(object):
         self.command = kwargs.pop("command")
         self.dependencies = kwargs.pop("dependencies", ())
         self.files = kwargs.pop("files", ())
+        self.parameters = kwargs.pop("parameters", ())
         self.restart_policy = kwargs.pop("restart_policy",
                                          RESTART_POLICY_NEVER)
 
@@ -48,7 +49,11 @@ class Action(object):
     def validate(self):
         pass
 
-    def run(self):
+    def run(self, user_parameters=None):
+        if user_parameters:
+            self.user_parameters = user_parameters
+        else:
+            self.user_parameters = ()
         self._create_configmap()
         self._create_action()
         return self.k8s_name
@@ -60,6 +65,7 @@ class Action(object):
             "config": CONF.configs._json(sort_keys=True),
             "workflow": self._get_workflow()
         }
+        data["config"]["action_parameters"] = self._get_custom_parameters()
         data.update(self._get_file_templates())
 
         cm = templates.serialize_configmap(self.k8s_name, data)
@@ -83,6 +89,21 @@ class Action(object):
             })
         return json.dumps({"workflow": wf})
 
+    def _get_custom_parameters(self):
+        parameters = {}
+        # add defaults
+        for param in self.parameters:
+            parameters[param["key"]] = param["default_value"]
+        # process user params
+        for param in self.user_parameters:
+            key, sep, value = param.partition("=")
+            if key in parameters:
+                parameters[key] = value
+            else:
+                raise Exception("Parameter %s is not allowed for %s action",
+                                key, self.name)
+        return parameters
+
     def _get_file_templates(self):
         # TODO(sreshetniak): use imports and add macros CM
         data = {}
@@ -277,7 +298,7 @@ def get_action(action_name):
                                        action_name))
 
 
-def run_action(action_name):
+def run_action(action_name, user_parameters=None):
     """Run action.
 
     :returns: str -- action name
@@ -285,7 +306,7 @@ def run_action(action_name):
     """
     action = get_action(action_name)
     action.validate()
-    return action.run()
+    return action.run(user_parameters)
 
 
 def list_action_status(action_type=None):

fuel_ccp/cli.py

@@ -346,12 +346,17 @@ class ActionRun(BaseCommand, show.ShowOne):
         parser = super(ActionRun, self).get_parser(*args, **kwargs)
         parser.add_argument("action",
                             help="Run action")
+        parser.add_argument("-p", "--parameter",
+                            action="append",
+                            help="Parameters for action in format param=value."
+                                 " Option can be repetable.")
         return parser
 
     def take_action(self, parsed_args):
         self._fetch_repos()
         config.load_component_defaults()
-        action_name = action.run_action(parsed_args.action)
+        action_name = action.run_action(parsed_args.action,
+                                        parsed_args.parameter)
         action_obj = action.get_action_status_by_name(action_name)
         return (
             ACTION_FIELDS,