[7.x] functional tests/firefox wait for loading after page refresh (#38082)

[dmlemeshko]

Backports the following commits to 7.x:

• functional tests/firefox wait for loading after page refresh (functional tests/firefox wait for loading after page refresh #38082)

[elasticmachine]

💔 Build Failed

• continuous-integration/kibana-ci/pull-request

17:07:30     at process._tickCallback (internal/process/next_tick.js:68:7)
17:07:30   name: 'HttpError',
17:07:30   status: 502,
17:07:30   headers:
17:07:30    { connection: 'close',
17:07:30      'content-length': '32',
17:07:30      'content-type': 'application/json',
17:07:30      date: 'Wed, 05 Jun 2019 15:07:30 GMT',
17:07:30      etag: '"5cf7d88f-20"',
17:07:30      server: 'GitHub.com',
17:07:30      'x-github-request-id': 'ABA0:5438:9A83F7:131E78B:5CF7DAB2' },
17:07:30   request:
17:07:30    { method: 'POST',
17:07:30      url:
17:07:30       'https://api.github.com/app/installations/739765/access_tokens',
17:07:30      headers:
17:07:30       { accept: 'application/vnd.github.machine-man-preview+json',
17:07:30         'user-agent': 'octokit-request.js/2.4.2 Node.js/10.15.2 (Linux 4.15; x64)',
17:07:30         authorization: 'bearer [REDACTED]',
17:07:30         'content-length': 0 } } }
17:07:30 error Command failed with exit code 1.

[dmlemeshko]

retest

[elasticmachine]

💔 Build Failed

• continuous-integration/kibana-ci/pull-request

Chrome UI Functional Tests.test/functional/apps/visualize/_region_map·js.visualize app vector map vector map should contain a dropdown with the default road_map base layer as an option
Chrome UI Functional Tests.test/functional/apps/visualize/_tile_map·js.visualize app tile map visualize app zoom warning behavior should show warning at zoom 10
Chrome X-Pack UI Functional Tests.x-pack/test/functional/apps/maps/sample_data·js.maps app maps loaded from sample data ecommerce "before all" hook
Chrome X-Pack UI Functional Tests.x-pack/test/functional/apps/maps/sample_data·js.maps app maps loaded from sample data ecommerce "after all" hook
Chrome X-Pack UI Functional Tests.x-pack/test/functional/apps/maps/sample_data·js.maps app maps loaded from sample data "after all" hook
Chrome X-Pack UI Functional Tests.x-pack/test/functional/apps/maps.maps app "after all" hook
Chrome X-Pack UI Functional Tests.x-pack/test/functional/apps/maps.maps app "after all" hook

[dmlemeshko]

retest

[elasticmachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request