Revert "We can remote this logic since string now include the codename."

This reverts commit 87a3f8f2342442d3230aa244175ad8e9de0e2a1c.
Revert "Include version codename in the generated version string."

This reverts commit 98b52748f863e2305886ee4480f58bdef3015d3a.
Use the formated version attribute.
Regular `__version__` attribute must not include codename.

* Add `noc` and `sha` as `repr` attributes.
Update generated `salt/_version.py` file to use `__saltstack_version__`.