Add ability to use authentication mode x509 for DMVPN profile
We support preshared key only:
vyos@hub# set vpn ipsec profile NHRPVPN authentication mode Possible completions: pre-shared-secret Use pre-shared secret key [edit] vyos@hub#
It also requires an additional "authentication remote-id" T3848
set vpn ipsec profile NHRPVPN authentication remote-id