bts: Introduce mp_ipa_up_timeout parameter

Some test env may take more than 10 seconds to (re-)start a BTS, so
let's make it variable through this parameter.
For instance it was observed that running osmo-bts-sysmo through ssh
inside a sysmobts can sometimes take a good number of seconds (specially
because ssh connection can take a while to be established successfully).

Change-Id: Ieb046358d8266ac94bd7b9e916e85f84de3ad319
1 file changed