Update RTT CTS tests for changes

Set/unset the RTT master switch system property before running tests
because Telecom depends on it

Test: cts
Change-Id: I0e9d61d5dd3f92a487ef8c5cc55f3d8999685f2b
Merged-In: I0e9d61d5dd3f92a487ef8c5cc55f3d8999685f2b
1 file changed