repo: overload delete and add repo to modify the addresses

Overload the add repo and delete repo commands to have
different functionality based on the flags.

Add a repo:
ogcli add repo --name test2 --address 192.168.9.140

Add addresses to repo with id 27:
ogcli add repo --address 192.168.9.141 192.168.9.142 --id 27

Delete address from repo with id 27:
ogcli delete repo --address 192.168.9.141 --id 27

Delete repo:
ogcli delete repo --id 27

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