Enabled config parameters to plugins

In this changeset, I added the possibility for all plugins to define
configuration parameters for themselves.

Partially Implements: blueprint plugins-parameters

Change-Id: I676b2583b3b4841c64c862b2b0c234b4eb5fd0fd

watcher/tests/applier/actions/test_change_nova_service_state.py

@@ -54,7 +54,8 @@ class TestChangeNovaServiceState(base.TestCase):
             baction.BaseAction.RESOURCE_ID: "compute-1",
             "state": hstate.HypervisorState.ENABLED.value,
         }
-        self.action = change_nova_service_state.ChangeNovaServiceState()
+        self.action = change_nova_service_state.ChangeNovaServiceState(
+            mock.Mock())
         self.action.input_parameters = self.input_parameters
 
     def test_parameters_down(self):

watcher/tests/applier/actions/test_migration.py

@@ -58,7 +58,7 @@ class TestMigration(base.TestCase):
             "dst_hypervisor": "hypervisor2-hostname",
             baction.BaseAction.RESOURCE_ID: self.INSTANCE_UUID,
         }
-        self.action = migration.Migrate()
+        self.action = migration.Migrate(mock.Mock())
         self.action.input_parameters = self.input_parameters
 
         self.input_parameters_cold = {
@@ -67,7 +67,7 @@ class TestMigration(base.TestCase):
             "dst_hypervisor": "hypervisor2-hostname",
             baction.BaseAction.RESOURCE_ID: self.INSTANCE_UUID,
         }
-        self.action_cold = migration.Migrate()
+        self.action_cold = migration.Migrate(mock.Mock())
         self.action_cold.input_parameters = self.input_parameters_cold
 
     def test_parameters(self):

watcher/tests/applier/actions/test_sleep.py

@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+import mock
 import voluptuous
 
 from watcher.applier.actions import sleep
@@ -23,7 +25,7 @@ from watcher.tests import base
 class TestSleep(base.TestCase):
     def setUp(self):
         super(TestSleep, self).setUp()
-        self.s = sleep.Sleep()
+        self.s = sleep.Sleep(mock.Mock())
 
     def test_parameters_duration(self):
         self.s.input_parameters = {self.s.DURATION: 1.0}