Connector_Pac::_connectedOdu [0..1] attribute to be added

[openBackhaul]

Problem:
The connection between IDU (IF connector) and ODU is currently documented as an instance of a "virtual" Holder that is referencing the ODU in its occupyingFru attribute, but there is no joint between the instance of
Connector that is actually terminating the physical connection to the ODU and this instance of Holder (see also airInterface issue#63).

Proposal to the LF ONMI x-haul call on 13th of November 2024:
A new Connector_Pac::_connectedOdu [0..1] : Holder attribute shall be added and hold the following comment "This attribute is mandatory for all instances of Connector that are used for connecting an ODU. It shall reference an instance of Holder that is referencing an ODU in its _occupyingFru attribute. This attribute shall not be represented in all other instances of Connector."

[openBackhaul]

Decision during the LF ONMI x-haul call on 13th of November 2024:
A new Connector_Pac::_connectedOdu [0..1] : Holder attribute shall be added and hold the following comment "This attribute is mandatory for all instances of Connector that might be used for connecting an ODU. It shall reference an instance of Holder that might reference an ODU in its _occupyingFru attribute. This attribute shall not be represented in all other instances of Connector."