We were passing the root of the test folder instead of the unitTests
specific folder into the runner, so it wasn't finding unit tests.

If a variable had env, config, or workspaceFolder as substring, it was
being treated as an environment variable lookup on the reminder of the
string minus the character immediately following the substring. For
instance: envRoot was being looked up as "oot" in the configuarion
environment block.

The issue is that the regex to match the env., config., and
workspaceFolder. patterns used . instead of \.