* Add WTI-POWER-MIB for support WTI VMR, NPS, RPC and NBB Series Power Products - available from https://ftp.wti.com/download/files/WTI-POWER-MIB.txt
* Created wti-power os definition together with discovery files.
* Add test data for wti-power os, created from available VMR-8HD20 device.
* Fixed typo in num_oid
* Change os in definition, to match filename
