NC | Health fix cli arguments validation and some small fixes

[romayalon]

Explain the changes

1. Health.js -

• Added CLI arguments type validation (validate_input_types).
• Called get_boolean_or_string_value(arg) on every boolean argument.
• Added try catch when calling exec(), and changed ignore_rc to - when ignore_rc=true service_status/pid/memory are undefined, when ignore_rc=false, setting them as missing so the user will know the command failed and didn't succeed.

2. Manage_nsfs_constants.js - Added Health related type and options.
3. Manage_nsfs_validations.js - Added Health options to be validated.
4. test_utils.js - added exec_health_cli.js function.
5. test_nc_nsfs_health.js - added relevant tests and fixed failing.

Issues: Fixed #xxx / Gap #xxx

1. Fixed https://bugzilla.redhat.com/show_bug.cgi?id=2262777
2. all_account_details/all_bucket_details defined check Uday mentioned on slack channel.

Testing Instructions:

1. sudo node --trace-warnings ./node_modules/mocha/bin/mocha /Users/romy/github/noobaa-core/src/test/unit_tests/test_nc_nsfs_health.js
2. Gap - a follow-up Refactoring PR

• Doc added/updated
• Tests added

[naveenpaul1]

@romayalon could you update the doc with new changes, Other than that its LGTM

[romayalon]

This PR is depenedant on validations changes, therefore it can not be backported to 5.15.4