for #19039 and #19041 this:
- fixes the install/remove scripts to read the env variable the proper
way
- truncates output before storing in the databse in case its longer than
MySQL's TEXT size
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
<!-- Note that API documentation changes are now addressed by the
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- [x] Added/updated tests
- [x] Manual QA for all new/changed functionality