Fix 5774: Allow iterative status checks

[gsquared94]

Fixes: #5774
Related: #6044

Description

Using the --iterative-status-check flag, users can enforce that skaffold does a status-check after every individual deployer runs.

User facing changes (remove if N/A)

New flag --iterative-status-check.

[container-tools-bot]

Please visit http://35.235.78.86:1313 to view changes to the docs.

[nkubala]

looks good, just a few comments

[codecov]

Codecov Report

Merging #6115 (7665209) into master (b8124d0) will decrease coverage by 0.07%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##           master    #6115      +/-   ##
==========================================
- Coverage   70.21%   70.13%   -0.08%     
==========================================
  Files         475      475              
  Lines       18142    18201      +59     
==========================================
+ Hits        12739    12766      +27     
- Misses       4469     4491      +22     
- Partials      934      944      +10     

Impacted Files	Coverage Δ
cmd/skaffold/app/cmd/flags.go	89.28% <ø> (ø)
pkg/skaffold/config/options.go	100.00% <ø> (ø)
pkg/skaffold/deploy/deploy_mux.go	54.38% <28.57%> (-3.62%)	⬇️
pkg/skaffold/runner/v1/deploy.go	49.41% <75.00%> (+0.01%)	⬆️
pkg/skaffold/runner/deployer.go	59.03% <100.00%> (ø)
pkg/skaffold/runner/runcontext/context.go	85.36% <100.00%> (+0.11%)	⬆️
pkg/skaffold/access/provider.go	26.66% <0.00%> (-23.34%)	⬇️
pkg/skaffold/util/tar.go	50.66% <0.00%> (-5.34%)	⬇️
pkg/skaffold/schema/validation/validation.go	84.44% <0.00%> (-2.20%)	⬇️
pkg/skaffold/instrumentation/export.go	61.69% <0.00%> (-1.77%)	⬇️
... and 12 more

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