fix(CI): Reduces CI time. Fixes #11768

[nsingla]

• Parallelizing docker builds by running a build workflow with different modules as matrix
• Uploading generated docker image tarball as an artifact (with 1 day of retention) with path as "images_${last commit sha}"
• Downloading the tar ball during the deployment step and loading it to kind cluster
• Fixing following minor warnings by parsing the CMD command as a string array:

3 warnings found (use docker --debug to expand):
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 84)
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 47)
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 53)

• By doing this, we've reduce the CI time by ~50%
• Delete now unused build_images.sh script

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Notes

• Follow up PR is required to generate outputs from the build jobs to list the deployed apps and the artifact directory where the artifacts were uploaded, so that we don;t need to hardcode these values in 2 places

[hbelmiro]

/lgtm
/approve

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[kaikaila]

Hi @nsingla
I came across this file and spotted a typo here. I guess t is missing. Should it be cluster_name?

[nsingla]

you are right, thanks for catching it, I will raise a PR to fix this shortly