Update cache-assets-base and cache-workhorse to exit with custom exit code

What does this MR do and why?

Part 2 of Draft: Add a script file for custom exit code (!177976 - closed).

Impacted jobs are:

1. cache-assets:test
2. cache-assets:production
3. cache-workhorse

This must merge after !179915 (merged)

Re: Add more custom exit codes for CI/CD failures (#512594)

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Before	After

How to set up and validate locally

Tested the following 3 scenarios:

1. Script exited with status 0: job exited with 0

2. Script exited with status 1: job exited with status 1 without changing exit code

3. Script exited with status 1 and standard output includes string Error: EEXIST: file already exists: job exited with custom status 166