[misc]move wrt-usecase-behavior-tests to wrt-usecase-tizen-tests

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 0, deleted 0
Unit test platform: [tizen]
summary: pack to wgt and xpk pass,all tcs  show normally
Seems `wrt-usecase-behavior-tests` is still there; then what does 'move' in the commit mean? Just curious of the background of this change.