fix(tests): correct syntax for all tests

[themightychris]

DRAFT: I haven't had a chance yet to verify all cases

What kind of change does this PR introduce?

Bug fix

What is the current behavior?

All of the tests currently pass even when every service is down due to various syntax errors

What is the new behavior?

Tests all fail if services are down and pass if they are up

Additional context

• $(echo "\e[0;31mFailed to connect to the database." && exit 1) attempts to execute "Failed" text that comes out of echo
• ( echo -e "\e[0;31mFailed to get a valid response." && exit 1 ) exits the subshell that using parenthesis creates and doesn't pass exit status out to script
• curl -sfo /dev/null on its own, with sh not being invoked with the -e option, doesn't cause the shell to exit with an error code when it fails because it proceeds to the echo command which succeeds
• Terminal coloring needs to be reset at end of error message