parallelize helm tests; library function for collapsible folders; directly call deploy/test 'manager' scripts.

General MR

Summary

changes:

• helm test "batch of 5" logic to use parallel helm test - this fixes a bug where first batch would be parallelized with group of 5, but all subsequent tests were executed sequentially.
• deploy_bigbang() no longer used, instead directly call shell scripts from bigbang.yaml.
• logged stdout statements now use [INFO] [PASS] [FAIL] [WARN] [ERROR]
• tell users to set DEBUG_ENABLED: 'true'
• don't execute first round of helm tests for the upgrade job.

added:

• script to parse results of cypress results.json, and fail/pass accordingly
• script in scripts/tests/test_bigbang.sh which runs the test scripts (instead of the library function calling these) so now executed scripts are localized to the directory where the pipeline points
• script in scripts/deploy/deploy_stack.sh which was previously the "deploy_bigbang()" function in the library. done for the same reasons as the test_bigbang.sh script.

Testing

• umbrella pipeline: passing: https://repo1.dso.mil/big-bang/pipeline-templates/package-validation/-/jobs/43929019 failing (cypress problems w/cluster-auditor): https://repo1.dso.mil/big-bang/pipeline-templates/package-validation/-/jobs/43928590
• tested against umbrella pipeline +/- vault enabled as well as cluster-auditor (but the cluster-auditor didn't generate a results.json).

KPI

• ~25% reduction in time to execute umbrella pipeline. lowered helm test stage script duration from ~12 minutes to ~3.5 minutes.
• improved code readability for faster tsing later.

Screenshots: sample job collapsible folders: