e2e WebDriver structural flake

[stevekuznetsov]

more flakes with webdriver here:

1)  unauthenticated user should be able to log in
  - Error: Angular could not be found on the page https://localhost:9000/ : angular never provided resumeBootstrap
...
2)  authenticated e2e-user with test project should be able to list the test project
  - Error: Error while waiting for Protractor to sync with the page: "angular could not be found on the window"
...
!!! Error in hack/../test/end-to-end/core.sh:346
    'grunt test-integration' exited with status 3
Call stack:
    1: hack/../test/end-to-end/core.sh:346 main(...)
Exiting with status 1

may be related to #6053

[spadgett]

See also #5881

[smarterclayton]

Have not seen this recently

[0xmichalis]

https://ci.openshift.redhat.com/jenkins/job/merge_pull_requests_origin/5486/console

[danmcp]

I don't think this is an issue for this repo anymore.