Feature: Reduce build log verbosity

[shreddedbacon]

Checklist

• Affected Issues have been mentioned in the Closing issues section
• Documentation has been written/updated
• PR title is ready for inclusion in changelog

The main goal is to reduce the entirety of the set +x/-x usage and only display useful information. Previously there was too much debugging information which with all the set +x/-x usage would obscure a lot of the warnings. A lot of YAML is also dumped straight into stdout for no real reason beyond being able to see what is created, for most users this is unused or just causes bulk on build logs for no reason.

This PR introduces a new flag though which can be set in the controller or as an environment variable to expose the created YAML files if required:

• LAGOON_FEATURE_FLAG_FORCE_BUILD_VERBOSITY=enabled (controller)
• LAGOON_FEATURE_FLAG_BUILD_VERBOSITY=enabled (environment variable)
• LAGOON_FEATURE_FLAG_DEFAULT_BUILD_VERBOSITY=enabled (controller)

An example build log is available here: https://gist.github.com/shreddedbacon/2ebb0f5cbc0ab524813959de1436ea2c

[shreddedbacon]

Additional work will be done in the uselagoon/build-deploy-tool for making build log output more standardised, but this is a starting point for reducing verbosity initially

[tobybellwood]

We can also update the line in exec-push-parallel.sh that controls the pushing into the registry to suppress the hundreds of lines - note that the --quiet doesn't suppress those lines, only the digest line 🤒

echo "docker push ${REGISTRY}/${PROJECT}/${ENVIRONMENT}/${IMAGE_NAME}:${IMAGE_TAG:-latest} | grep -v -E 'Waiting|Layer already exists|Preparing'" >> /kubectl-build-deploy/lagoon/push

Which gives the following instead:

STEP Push images to registry
The push refers to repository [registry.192.168.1.51.nip.io:32080/ci-drupal-pg-control-k8s/drupal9-php80-postgres-single/nginx]
latest: digest: sha256:c63330919b7a6d8b7d1b829fef69e5fcf838055a9eb2ce3f4bb847ac44166020 size: 5942
The push refers to repository [registry.192.168.1.51.nip.io:32080/ci-drupal-pg-control-k8s/drupal9-php80-postgres-single/cli]
latest: digest: sha256:41468e8e881c355b3d81694e1e5a6809409db70ff9557f69c7a47617ed49b52b size: 11167
The push refers to repository [registry.192.168.1.51.nip.io:32080/ci-drupal-pg-control-k8s/drupal9-php80-postgres-single/postgres]
latest: digest: sha256:89609dbc79b749b440f301524c05d185be0e2091807b460c34ffbbfabdc302bc size: 3652
The push refers to repository [registry.192.168.1.51.nip.io:32080/ci-drupal-pg-control-k8s/drupal9-php80-postgres-single/php]
latest: digest: sha256:558ab2bd58800a97e576a06503e0771624425409de82e6c2fb65a76d078b2145 size: 6586
##############################################
STEP Image Push to Registry: Completed at 2022-08-08 06:03:08 (UTC) Duration 00:00:04 Elapsed 00:00:15
##############################################

[tobybellwood]

continued in uselagoon/build-deploy-tool#88