Remove pragma no cover from code

Add exclude_lines in the report section of .coveragerc to ignore
abstract in test coverage

Change-Id: I7863a8ba7e20358fb7cdf3cc7e4d83871a5104ef

watcher/applier/action_plan/base.py

@@ -25,5 +25,4 @@ import six
 class BaseActionPlanHandler(object):
     @abc.abstractmethod
     def execute(self):
-        raise NotImplementedError(
-            "Should have implemented this")  # pragma:no cover
+        raise NotImplementedError()

watcher/applier/base.py

@@ -25,5 +25,4 @@ import six
 class BaseApplier(object):
     @abc.abstractmethod
     def execute(self, action_plan_uuid):
-        raise NotImplementedError(
-            "Should have implemented this")  # pragma:no cover
+        raise NotImplementedError()

watcher/applier/mapping/base.py

@@ -30,5 +30,4 @@ class BaseActionMapper(object):
         :type action: watcher.decision_engine.action.BaseAction
         :return: the associated Primitive
         """
-        raise NotImplementedError(
-            "Should have implemented this")  # pragma:no cover
+        raise NotImplementedError()

watcher/applier/primitives/base.py

@@ -26,11 +26,9 @@ class BasePrimitive(object):
     @Promise
     @abc.abstractmethod
     def execute(self):
-        raise NotImplementedError(
-            "Should have implemented this")  # pragma:no cover
+        raise NotImplementedError()
 
     @Promise
     @abc.abstractmethod
     def undo(self):
-        raise NotImplementedError(
-            "Should have implemented this")  # pragma:no cover
+        raise NotImplementedError()