B-97934: Use local workspace for rhoconnect application instead of pre-installed gem

* Also moved rhoconnect test application area to tmp/ for consistent cleanup
* Lots of .gitignore entries, log files really should be in a consistent file extension (i.e. .log)
* Don't checkin config.yml, it is more idiomatic to checkin 'config.yml.sample' and developers have a copy on their own machine that isn't checked in.