Refs #19707 - test searching domains with locs

(cherry picked from commit 114973b3525a60ca2649977ffde389229d5a0157)

Fixes #16884 - enforce granular filters even during save

Refs #17525 - verify domain dns id also on update

Fixes #18892 - Do not show 'undefined method' in error message

Fixes #20072 - Allow thin host list via API

Fixes #17087 - default and overrides values converted to string

Fixes #19612 - CVE-2017-7505 don't expose admin to taxed users

fixes #19476 - list features in smart proxy refresh API response

fixes #19131 - upgrade minitest to latest 5.x

- override minitest's `_` expectation method with the gettext method
- rename `location` let helper, conflicted with a minitest method name
- fix `assert_equal nil, [..]` deprecation warnings, prefer `assert nil`...

Fixes #18687 - restore hash format for parameter attributes