bug #167 Bugfix with auto label (Nyholm)

This PR was squashed before being merged into the master branch.

Discussion
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Bugfix with auto label

Fixed issue introduced in #164 and #165

This is a nasty bug, it is all about race condition and it depends on what webhook is sent when.
When a PR is opened, there is usually 5 or so webhook requests to carson. Some includes all lables, some do not. This PR make sure we query Github for the latest data before we make any changes.

Commits
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7100074 cs
a08565b Fixes
6fca345 Updated docs
2644643 cs
3e7f4c3 Added sleep
65f7dfa Bugfix with auto label

Author: weaverryan

composer.json

@@ -29,6 +29,7 @@
         "symfony/symfony": "*"
     },
     "require-dev": {
+        "happyr/service-mocking": "^0.1.3",
         "symfony/browser-kit": "^5.1",
         "symfony/phpunit-bridge": "^5.1",
         "symfony/web-profiler-bundle": "^5.1"