These 3 states: "oper-state", "admin-state", "availability-state" are optional,
but shall be checked in order to activate the carriers. If an O-RU doesn't support it,
we assume the expected values:
- "oper-state" = "enabled"
- "admin-state" = "unlocked"
- "availability-state" = "NORMAL"
Implement retrieval of the hardware states if O-RU supports, i.e. Benetel release v1.4.1.