Adds e2e testing (platformsh#4102)

* adds cypress and initial config files

* updates config files and test file, adds github actions file

* adds cypress example files to ignore

* updated env var name in config, aliases find of h2 since the test was losing it?

* adds a check for missing object properties and if missing, attempts to repopulate them

* blocks analytics scripts from loading during tests

* cleans up our spec file

* trying to debug why we are still failing tests

* add a wait to see if that gets us over the hump

* adding a full second pause since the runner seems to be slow

* adds config files for adding cypress e2e testing
adds workflow for triggering cypress e2e testing

* removes .wait() and replaces with a .clear() on the input element

* third test is still flaky w/o the .wait(). readding

* corrects workflow file name that contains the artifact we need

.github/workflows/e2e.yaml

@@ -15,7 +15,7 @@ jobs:
       - name: Download info on PR
         uses: dawidd6/action-download-artifact@v2
         with:
-          workflow: get-urls.yaml
+          workflow: get-pr-info.yaml
           workflow_conclusion: completed
           name: pr-info
       - name: retrieve url