*/osmo-stp.cfg: Explicitly define role & sctp-role

 It was recently decided it's a good practice to always specify the role
 and sctp-role for all ASPs configured in the VTY, since it's an
 important configuration providing feedback on the network setup
 expectancies.

Change-Id: If48ca06f2cc3c0986daa5f6264d80138d468332a
6 files changed