RBAC-enabled dashboard for k8s 1.9 and greater

[jackfrancis]

What this PR does / why we need it: RBAC-enabled dashboard config for 1.9 and greater k8s clusters

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #2808

Special notes for your reviewer:

If applicable:

• documentation
• unit tests
• tested backward compatibility (ie. deploy with previous version, upgrade with this branch)

Release note:

RBAC-enabled dashboard for 1.9 and greater

[jackfrancis]

@lachie83 @slack FYI this PR basically opines: to use the dashboard in 1.9 and greater you'll need to adhere to this RBAC schema

[CecileRobertMichon]

How does this fit with #2808 ?

[jackfrancis]

@CecileRobertMichon it fixes it :) (added to description)

[mpalumbo7]

Weird. What is causing the e2e tests to fail?

[jackfrancis]

@ewok2030 E2E test is also broken :) will fix and commit to this PR branch

[codecov]

Codecov Report

Merging #2816 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2816      +/-   ##
==========================================
- Coverage   46.92%   46.91%   -0.01%     
==========================================
  Files          86       86              
  Lines       12802    12786      -16     
==========================================
- Hits         6007     5999       -8     
+ Misses       6240     6232       -8     
  Partials      555      555

Impacted Files	Coverage Δ
pkg/operations/kubernetesupgrade/upgrader.go	56.48% <0%> (-0.84%)	⬇️
pkg/api/convertertoapi.go	56.51% <0%> (-0.06%)	⬇️
pkg/api/types.go	28.88% <0%> (ø)	⬆️
pkg/api/vlabs/types.go	18.57% <0%> (ø)	⬆️
pkg/api/converterfromapi.go	9.87% <0%> (+0.01%)	⬆️
pkg/acsengine/engine.go	62.82% <0%> (+0.04%)	⬆️
pkg/acsengine/defaults.go	62.83% <0%> (+0.08%)	⬆️
pkg/api/vlabs/validate.go	43.22% <0%> (+0.29%)	⬆️

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[mpalumbo7]

@jackfrancis Anything left blocking this merge?....I'm gonna have to learn Go so I can stop asking for others to fix the things I would like fixed. :)

[CecileRobertMichon]

lgtm