This commit removes .testr.conf since this repo already has
.stestr.conf. We just need .stestr.conf instead of .testr.conf.
Change-Id: I30c04355c245ce2ad052b8573771af0c0fa3e8f4
Following commits accomplishes several things:
* unit tests run with ostestr
* coverage calculation
* documentation generated using OS approach & theme
* bandit linting
Change-Id: I6c3b48805c237f0ad95220b90ff66b045c7478fb