Change GatewayAPI type in adc to boolean pointer

[chenlin07]

What this PR does / why we need it:

Change GatewayAPI type in adc to boolean pointer

Which issue(s) this PR fixes:

Fixes #

Describe testing done for PR:

Special notes for your reviewer:

Release note:

New PR Checklist

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[codecov-commenter]

Codecov Report

Merging #174 (5c85f4f) into main (1c17e4c) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #174      +/-   ##
==========================================
+ Coverage   36.27%   36.32%   +0.04%     
==========================================
  Files          20       20              
  Lines        2715     2717       +2     
==========================================
+ Hits          985      987       +2     
  Misses       1671     1671              
  Partials       59       59              

Files	Coverage Δ
api/v1alpha1/akodeploymentconfig_types.go	100.00% <ø> (ø)
pkg/ako/values.go	61.93% <100.00%> (+0.26%)	⬆️

[XudongLiuHarold]

LGTM