feat: add possibility to disable pushing of image in deploy command

[zroubalik]

Signed-off-by: Zbynek Roubalik zroubali@redhat.com

This is needed to have standalone deploy Tekton task.

Basically implementing the same functionality that has been done in #681 for build.

Changes

• 🎁 add possibility to disable pushing of image in deploy command

/kind enhancement

Relates: #620

Enable 'func deploy' without pushing an image using the --push or -u flag

[knative-prow-robot]

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This pull-request has been approved by: zroubalik

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[codecov]

Codecov Report

Merging #739 (d813244) into main (2282cf8) will decrease coverage by 0.03%.
The diff coverage is 28.94%.

@@            Coverage Diff             @@
##             main     #739      +/-   ##
==========================================
- Coverage   41.56%   41.52%   -0.04%     
==========================================
  Files          42       42              
  Lines        4083     4101      +18     
==========================================
+ Hits         1697     1703       +6     
- Misses       2135     2145      +10     
- Partials      251      253       +2     

Impacted Files	Coverage Δ
cmd/deploy.go	15.88% <9.09%> (-0.29%)	⬇️
client.go	64.28% <33.33%> (-0.81%)	⬇️
cmd/build.go	59.42% <85.71%> (+1.33%)	⬆️

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[zroubalik]

This should be ready for review and merge.

[matejvasek]

/lgtm