Removed hack/lib/test.sh from /hack/shellcheck_failures
Removed and }s to satisfy shellcheck SC2004
Added double quotes to satisfy shellcheck SC2086
Converted array reference to access all elements to satisfy shellcheck SC2128
Updates to satisfy shellcheck SC2143
Updates to satisfy shellcheck SC2178 & SC2124
Updates to satisfy shellcheck SC2128
Updates to satisfy shellcheck SC2207
Remove double quotes to allow expansion. Fixed piping to grep -q
Removed quotes to allow for expansion on flags