MEC011 Service Management API subscriptions

MEC013 (distance, areaCircle) - MEC012 - MEC028 phase 1 testing fixes

AppSupport application termination subscription support

MEC011 phase 1

New feature: MEC013 (Location) periodic subscription

Services for MEC011 support

WAIS (MEC028): Periodic and Trigger combinations for AssocSta and StaDataRate notifications

Location service : Area circle and Distance subscription added, Distance endpoint added

RNIS: Mandatory parameters for subscription enforced