fix: Change 'securityContext/capabilities/drop' from 'all' to 'ALL'.

[boatmisser]

Signed-off-by: Chris Burke christopher.burke@airnz.co.nz

What this PR does / why we need it:
The helm chart default values used the incorrect case for securityContext.capabilities.drop.
Was:

  securityContext:
    capabilities:
      drop:
        - all

Now:

  securityContext:
    capabilities:
      drop:
        - ALL

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
Fixes #2271

Special notes for your reviewer:

[sozercan]

@boatmisser thanks for the PR! Can you run make manifests and push the changes please?
https://open-policy-agent.github.io/gatekeeper/website/docs/help/#contributing-to-helm-chart

[boatmisser]

@sozercan
Sorry, my bad, I interpreted that guide as those changes would be "clobbered when we do a new release"; so while I ran make manifests to check the results I did not add them to the commit.

Have now pushed make manifests changes, thanks!

[ritazh]

LGTM

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.33%. Comparing base (01e2d53) to head (9efd24e).
Report is 816 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2273      +/-   ##
==========================================
- Coverage   53.35%   53.33%   -0.02%     
==========================================
  Files         115      115              
  Lines       10131    10131              
==========================================
- Hits         5405     5403       -2     
- Misses       4309     4311       +2     
  Partials      417      417              

Flag	Coverage Δ
unittests	53.33% <ø> (-0.02%)	⬇️

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