Need networking_bgp_config_update endpoint

[rcgoodfellow]

Currently there is

• networking_bgp_config_create
• networking_bgp_config_delete

but no

• networking_bgp_config_update

Now that max_paths is in the BGP config, there is a need to make this object updatable. We should probably also support updating the bgp_announce_set_id field as well. It probably does not make sense to update the ASN, since so much is keyed off that, it's likely a better path to require that a new BGP config object be created in that case. vrf is currently meaningless and should probably be removed.

[internet-diglett]

Is this also a good opportunity to break BGP configuration out of SwitchPortSettings (and static routing too, for that matter)?

[rcgoodfellow]

Is this also a good opportunity to break BGP configuration out of SwitchPortSettings (and static routing too, for that matter)?

@internet-diglett I think we'll want to do that in the context of RFD 662.