Production Orgs require rollbackOnError=True

Fix https://github.com/joeferraro/MavensMate-SublimeText/issues/152 which is a  regression caused by
https://github.com/joeferraro/MavensMate-SublimeText/issues/118 in commit
https://github.com/joeferraro/MavensMate/commit/2b638e56ff0e60152f856f4f7928c76c2049295b.

Check `testRequired` to find out if this is a production org. This is a bit of a misnomer as `runAllTests=True` will run managed package tests, other tests are *always* run so we should honor the UI, however Production orgs do require rollbackOnError=True so we should override it here

Do not use setting for `rollback_on_error`, always use UI value for `run_tests`