Setting Helm params with commas now updates local spec

[simster7]

When setting Helm parameters with commas (as per #1720), commas are now also escaped in app.Spec.Source.Helm.Parameters. Otherwise, a ComparisonError would arise since the the local spec would be different.

[codecov]

Codecov Report

Merging #1732 into master will decrease coverage by 0.1%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master    #1732      +/-   ##
==========================================
- Coverage    34.2%   34.09%   -0.11%     
==========================================
  Files          77       77              
  Lines       11438    11439       +1     
==========================================
- Hits         3912     3900      -12     
- Misses       6985     6999      +14     
+ Partials      541      540       -1

Impacted Files	Coverage Δ
cmd/argocd/commands/app.go	0.77% <0%> (-0.01%)	⬇️
util/helm/helm.go	63.3% <100%> (ø)	⬆️
util/webhook/webhook.go	21.34% <0%> (-23.6%)	⬇️
controller/appcontroller.go	39.72% <0%> (+1.39%)	⬆️

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