[wrt] Add 20 TCs to wrt-rtcoreauto-tizen-tests

Impacted TC num(approved): New 20, Update 0, Delete 0
Impacted TC num(designed): New 7, Update 0, Delete 0
Unit test platform: Tizen
Unit test result summary: Pass 20, Fail 0, Block 0
Designed reason: did not have a good idea to check the seven cases