BSC_Tests: also match band indicator in SI6 Rest Octets

Due to a bug in the current osmo-bsc master, osmo-bsc inverts
the band indicator bit in SI6 Rest Octets.  This change extends
testing coverage to demonstrate the problem (see TC_si_default).

Change-Id: I93e1fcfaea973ec2461e30f656d5f5f0d829909b
Related: osmo-bsc.git Iaa8377919a144e7f3799b76249f579c8f3874145
1 file changed