[bugfix] Fix bug where provided credentials are not tested

[tolfsh]

Hi!
I was trying this tool during assessment and it appears that provided credentials are not tested and silently ignored because of a try/catch. This PR contains:

• A fix for the problem : Now the provided credentials are tested if provided through --tomcat-usernames-file, --tomcat-passwords-file, --tomcat-username or --tomcat-password. Only the provided credentials are test if they are provided, otherwise only the defaults are tested.
• Add verbose mode : Verbose mode was present in argument and config but was not linked, thus not usable. Now the number of tested credentials is printed in verbose mode.

Happy pentesting,

TOLF

[p0dalirius]

Thank you @tolfsh!