Update kms and lambda to work with terraform

moto/kms/models.py

@@ -21,6 +21,7 @@ class Key(BaseModel):
         self.account_id = "0123456789012"
         self.key_rotation_status = False
         self.deletion_date = None
+        self.tags = {}
 
     @property
     def physical_resource_id(self):
@@ -35,7 +36,7 @@ class Key(BaseModel):
             "KeyMetadata": {
                 "AWSAccountId": self.account_id,
                 "Arn": self.arn,
-                "CreationDate": "2015-01-01 00:00:00",
+                "CreationDate": datetime.strftime(datetime.utcnow(), "%Y-%m-%dT%H:%M:%SZ"),
                 "Description": self.description,
                 "Enabled": self.enabled,
                 "KeyId": self.id,
@@ -84,6 +85,19 @@ class KmsBackend(BaseBackend):
         self.keys[key.id] = key
         return key
 
+    def update_key_description(self, key_id, description):
+        key = self.keys[self.get_key_id(key_id)]
+        key.description = description
+
+    def tag_resource(self, key_id, tags):
+        key = self.keys[self.get_key_id(key_id)]
+        key.tags = tags
+
+
+    def list_resource_tags(self, key_id):
+        key = self.keys[self.get_key_id(key_id)]
+        return key.tags
+
     def delete_key(self, key_id):
         if key_id in self.keys:
             if key_id in self.key_to_aliases:

moto/kms/responses.py

@@ -38,6 +38,28 @@ class KmsResponse(BaseResponse):
             policy, key_usage, description, self.region)
         return json.dumps(key.to_dict())
 
+    def update_key_description(self):
+        key_id = self.parameters.get('KeyId')
+        description = self.parameters.get('Description')
+
+        self.kms_backend.update_key_description(key_id,description)
+        return json.dumps(None)
+
+    def tag_resource(self):
+        key_id = self.parameters.get('KeyId')
+        tags = self.parameters.get('Tags')
+        self.kms_backend.tag_resource(key_id,tags)
+        return json.dumps({})
+
+    def list_resource_tags(self):
+        key_id = self.parameters.get('KeyId')
+        tags = self.kms_backend.list_resource_tags(key_id)
+        return json.dumps({
+            "Tags": tags,
+            "NextMarker": None,
+            "Truncated": False,
+        })
+
     def describe_key(self):
         key_id = self.parameters.get('KeyId')
         try: