tests: Change NTLM tests to require SSL

tests: Change NTLM tests to require SSL

Prior to this change tests that required NTLM feature did not require
SSL feature.

There are pending changes to cmake builds that will allow enabling NTLM
in non-SSL builds in Windows. In that case the NTLM auth strings created
are different from what is expected by the NTLM tests and they fail:

"The issue with NTLM is that previous non-SSL builds would not enable
NTLM and so the NTLM tests would be skipped."

Assisted-by: marc-groundctl@users.noreply.github.com
Ref: https://github.com/curl/curl/pull/4717#issuecomment-566218729

Closes https://github.com/curl/curl/pull/4768