bts: Avoid race condition in  TC_pcu_deact_req

When our emulated PCU sends a DEACT.req to the BTS, there is no way
of knowing when exactly that command will have been completed: There is
no confirmation sent in response.

Let's introduce a f_sleep(1.0) to give the BTS sufficient time for
deactivating the channel.

This will make  TC_pcu_deact_req pass reliably.  It currently fails
in about one third of all test executions on jenkins.

Change-Id: Id9a559b8b208a60f71c3eb9a23830e4d2dbc5df9
1 file changed