Added id to the namespace name generation

Removed quarantine tag from the squash merges test;

qa/qa/runtime/namespace.rb

@@ -8,7 +8,9 @@ module QA
       end
 
       def name
-        Runtime::Env.namespace_name || "qa-test-#{time.strftime('%Y-%m-%d-%H-%M-%S')}"
+        # If any changes are made to the name tag, following script has to be considered:
+        # https://ops.gitlab.net/gitlab-com/gl-infra/traffic-generator/blob/master/bin/janitor.bash
+        @name ||= Runtime::Env.namespace_name || "qa-test-#{time.strftime('%Y-%m-%d-%H-%M-%S')}-#{SecureRandom.hex(8)}"
       end
 
       def path

qa/qa/specs/features/browser_ui/3_create/merge_request/squash_merge_request_spec.rb

@@ -2,7 +2,7 @@
 
 module QA
   # Failure issue: https://gitlab.com/gitlab-org/quality/staging/issues/31
-  context 'Create', :quarantine do
+  context 'Create' do
     describe 'Merge request squashing' do
       it 'user squashes commits while merging' do
         Runtime::Browser.visit(:gitlab, Page::Main::Login)