Build on tag

We should allow following types on builds, depending on tag:

1. dev - "hot build", goes to /cvmfs/nica.jinr.ru/sw/tmp/{os_version}/package/dev
2. test - "test build" - this is when tag terminates on -test. When built, result goes to /cvmfs/nica.jinr.ru/sw/tmp/{os_version}/package/used_tag
3. release build - this is a normal release build and the result of such build should go to /cvmfs/nica.jinr.ru/sw/tmp/{os_version}/package/used_tag. The question is, how do we differentiate between the first and second variant, probably it would be good to add "-dev" termination string to the tag. @mvala