Update code based on feedback

ee/lib/api/scim.rb

@@ -21,7 +21,7 @@ module API
 
           true
         rescue => e
-          logger.error(e.message)
+          logger.error(identity: identity, error: e.class.name, message: e.message, source: "#{__FILE__}:#{__LINE__}")
 
           false
         end

ee/lib/ee/gitlab/scim/params_parser.rb

@@ -12,7 +12,7 @@ module EE
           'name.formatted': :name,
           'emails[type eq "work"].value': :email,
           active: :active
-        }.with_indifferent_access
+        }.with_indifferent_access.freeze
 
         COERCED_VALUES = {
           'True' => true,

ee/spec/requests/api/scim_spec.rb

@@ -125,7 +125,7 @@ describe API::Scim do
     end
   end
 
-  describe 'DELETE/scim/v2/groups/:group/Users/:id' do
+  describe 'DELETE /scim/v2/groups/:group/Users/:id' do
     context 'existing user' do
       before do
         delete scim_api("scim/v2/groups/#{group.full_path}/Users/#{identity.extern_uid}")