Remove duplication store of VLAN ID
Reset the source VLAN to 0 (domain) on disconnect
Do not check if the VLAN is non zero when setting
Remove Listener attribute when the Talker leaves
Set the MEDIA_CLOCK_SOURCE bit in ADP Talker Capabilities
Add 1722.1 GET_COUNTERS AECP command for CLOCK_DOMAIN
Do not reset received_pdelay flag when incrementing lost responses

Caused an incorrect bypass of the multiple response check
Moves MVRP join into SRP code. 

The correct VLAN to join should be decided in SRP 
as this is where the domain VID is held. If 0 is 
passed as the VID from the application, this will
now join the domain VID and return the VID that 
was joined. The VID held by the AVB manager is then
up-to-date when queried by the API.