Fix swagger errors

Fixes #287

endpoints/api/trigger.py

@@ -102,7 +102,6 @@ class BuildTriggerSubdirs(RepositoryParamResource):
   """ Custom verb for fetching the subdirs which are buildable for a trigger. """
   schemas = {
     'BuildTriggerSubdirRequest': {
-      'id': 'BuildTriggerSubdirRequest',
       'type': 'object',
       'description': 'Arbitrary json.',
     },
@@ -151,7 +150,6 @@ class BuildTriggerActivate(RepositoryParamResource):
   """
   schemas = {
     'BuildTriggerActivateRequest': {
-      'id': 'BuildTriggerActivateRequest',
       'type': 'object',
       'required': [
         'config'
@@ -256,7 +254,6 @@ class BuildTriggerAnalyze(RepositoryParamResource):
   """
   schemas = {
     'BuildTriggerAnalyzeRequest': {
-      'id': 'BuildTriggerAnalyzeRequest',
       'type': 'object',
       'required': [
         'config'
@@ -393,20 +390,19 @@ class ActivateBuildTrigger(RepositoryParamResource):
   """ Custom verb to manually activate a build trigger. """
   schemas = {
     'RunParameters': {
-      'id': 'RunParameters',
       'type': 'object',
       'description': 'Optional run parameters for activating the build trigger',
-      'additional_properties': False,
       'properties': {
         'branch_name': {
           'type': 'string',
-          'description': '(SCM only) If specified, the name of the branch to model.build.'
+          'description': '(SCM only) If specified, the name of the branch to build.'
         },
         'commit_sha': {
           'type': 'string',
           'description': '(Custom Only) If specified, the ref/SHA1 used to checkout a git repository.'
         }
-      }
+      },
+      'additionalProperties': False
     }
   }