Add Goal in BaseStrategy + Goal API reads from DB

In this changeset, I changed the Strategy base class to add new
abstract class methods. I also added an abstract strategy class
per Goal type (dummy, server consolidation, thermal optimization).

This changeset also includes an update of the /goals Watcher API
endpoint to now use the new Goal model (DB entries) instead of
reading from the configuration file.

Partially Implements: blueprint get-goal-from-strategy
Change-Id: Iecfed58c72f3f9df4e9d27e50a3a274a1fc0a75f

watcher/tests/decision_engine/fake_strategies.py

@@ -0,0 +1,80 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2016 b<>com
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from watcher.decision_engine.strategy.strategies import base as base_strategy
+
+
+class FakeStrategy(base_strategy.BaseStrategy):
+
+    GOAL_NAME = NotImplemented
+    GOAL_DISPLAY_NAME = NotImplemented
+    NAME = NotImplemented
+    DISPLAY_NAME = NotImplemented
+
+    @classmethod
+    def get_name(cls):
+        return cls.NAME
+
+    @classmethod
+    def get_display_name(cls):
+        return cls.DISPLAY_NAME
+
+    @classmethod
+    def get_translatable_display_name(cls):
+        return cls.DISPLAY_NAME
+
+    @classmethod
+    def get_goal_name(cls):
+        return cls.GOAL_NAME
+
+    @classmethod
+    def get_goal_display_name(cls):
+        return cls.GOAL_DISPLAY_NAME
+
+    @classmethod
+    def get_translatable_goal_display_name(cls):
+        return cls.GOAL_DISPLAY_NAME
+
+    def execute(self, original_model):
+        pass
+
+
+class FakeDummy1Strategy1(FakeStrategy):
+    GOAL_NAME = "DUMMY_1"
+    GOAL_DISPLAY_NAME = "Dummy 1"
+    NAME = "STRATEGY_1"
+    DISPLAY_NAME = "Strategy 1"
+
+
+class FakeDummy1Strategy2(FakeStrategy):
+    GOAL_NAME = "DUMMY_1"
+    GOAL_DISPLAY_NAME = "Dummy 1"
+    NAME = "STRATEGY_2"
+    DISPLAY_NAME = "Strategy 2"
+
+
+class FakeDummy2Strategy3(FakeStrategy):
+    GOAL_NAME = "DUMMY_2"
+    GOAL_DISPLAY_NAME = "Dummy 2"
+    NAME = "STRATEGY_3"
+    DISPLAY_NAME = "Strategy 3"
+
+
+class FakeDummy2Strategy4(FakeStrategy):
+    GOAL_NAME = "DUMMY_2"
+    GOAL_DISPLAY_NAME = "Other Dummy 2"
+    NAME = "STRATEGY_4"
+    DISPLAY_NAME = "Strategy 4"