Decoupled Goal from Strategy

In this changeset, I decoupled the notion of Goal from the Strategy
by making it a distinct object. Goals are plugins that can be loaded
just like for the strategies.

Partially Implements: blueprint efficacy-indicator

Change-Id: I4378dccd508170b305aa968843228bbc8af78895

watcher_tempest_plugin/tests/api/admin/test_audit_template.py

@@ -165,7 +165,7 @@ class TestAuditTemplate(base.BaseInfraOptimTest):
 
     @test.attr(type='smoke')
     def test_update_audit_template_replace(self):
-        _, new_goal = self.client.show_goal("SERVER_CONSOLIDATION")
+        _, new_goal = self.client.show_goal("server_consolidation")
         _, new_strategy = self.client.show_strategy("basic")
 
         params = {'name': 'my at name %s' % uuid.uuid4(),

watcher_tempest_plugin/tests/api/admin/test_goal.py

@@ -24,7 +24,7 @@ from watcher_tempest_plugin.tests.api.admin import base
 class TestShowListGoal(base.BaseInfraOptimTest):
     """Tests for goals"""
 
-    DUMMY_GOAL = "DUMMY"
+    DUMMY_GOAL = "dummy"
 
     @classmethod
     def resource_setup(cls):

watcher_tempest_plugin/tests/scenario/test_execute_basic_optim.py

@@ -30,7 +30,7 @@ CONF = config.CONF
 class TestExecuteBasicStrategy(base.BaseInfraOptimScenarioTest):
     """Tests for action plans"""
 
-    BASIC_GOAL = "SERVER_CONSOLIDATION"
+    BASIC_GOAL = "server_consolidation"
 
     @classmethod
     def skip_checks(cls):

watcher_tempest_plugin/tests/scenario/test_execute_dummy_optim.py

@@ -29,15 +29,15 @@ class TestExecuteDummyStrategy(base.BaseInfraOptimScenarioTest):
     """Tests for action plans"""
 
     def test_execute_dummy_action_plan(self):
-        """Execute an action plan based on the DUMMY strategy
+        """Execute an action plan based on the 'dummy' strategy
 
-        - create an audit template with the dummy strategy
+        - create an audit template with the 'dummy' strategy
         - run the audit to create an action plan
         - get the action plan
         - run the action plan
         - get results and make sure it succeeded
         """
-        _, goal = self.client.show_goal("DUMMY")
+        _, goal = self.client.show_goal("dummy")
         _, audit_template = self.create_audit_template(goal['uuid'])
         _, audit = self.create_audit(audit_template['uuid'])