fix: resolve 7 E2E test failures — badge nav + test selectors (#50)

Fix badge navigation to use cluster-scoped path via Router.createRouteURL
instead of hardcoded '/polaris'. Remove hardcoded RGB color assertions in
badge color test. Scope ambiguous /%/ and 'Resources' selectors in polaris
E2E tests. Fix settings tests to click into plugin settings before asserting.

Fixes: PRI-151

Co-authored-by: gandalf-the-greybeard[bot] <gandalf-the-greybeard[bot]@users.noreply.github.com>
Co-authored-by: Paperclip <noreply@paperclip.ing>

src/components/AppBarScoreBadge.tsx

@@ -1,3 +1,4 @@
+import { Router } from '@kinvolk/headlamp-plugin/lib';
 import { useTheme } from '@mui/material/styles';
 import React from 'react';
 import { useHistory } from 'react-router-dom';
@@ -34,7 +35,7 @@ export default function AppBarScoreBadge() {
   };
 
   const handleClick = () => {
-    history.push('/polaris');
+    history.push(Router.createRouteURL('polaris'));
   };
 
   return (