Update rpm spec and pbr setup configs (#2170)

* Update rpm spec and pbr setup configs

* Rename package to kubespray
* Do not break Fedora's FHS and install to /usr/share instead
* Remove the vendor tag
* Update source0 for better artifacts' names
* Fix missing files build errors
* Make version/release to auto match from git and fit PEP 440

Co-authored-by: Matthias Runge <mrunge@redhat.com>
Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>

* Add package paths to roles search in ansible conf

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>

* Poke jinja2 requirements in rpm spec file

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>