Replace voluptuous with JSONSchema in BaseAction

Now that we replaced voluptuous with JSONSchema in all actions,
this patch replaces voluptuous with JSONSchema in BaseAction
and removes validate_parameters method in each action.

Partially Implements: blueprint jsonschema-validation

Change-Id: I07c907ddfa4a568d7fff42776df02218330d56a0

watcher/applier/actions/sleep.py

@@ -17,7 +17,6 @@
 # limitations under the License.
 #
 
-import jsonschema
 import time
 
 from oslo_log import log
@@ -54,13 +53,6 @@ class Sleep(base.BaseAction):
             'additionalProperties': False,
         }
 
-    def validate_parameters(self):
-        try:
-            jsonschema.validate(self.input_parameters, self.schema)
-            return True
-        except jsonschema.ValidationError as e:
-            raise e
-
     @property
     def duration(self):
         return int(self.input_parameters.get(self.DURATION))