get https://de1.api.central.arubanetworks.com/network-config/v1alpha1/tunnel-groups
Configure GRE Tunnel-groups.
Tunnel-group provides redundancy for Layer-2 and Layer-3 GRE Tunnels.
Up to 5 tunnels can be added to a group. One of them would be selected
as the active tunnel. Only that tunnel would be used for carrying
data traffic. If the active tunnel fails, another member would be
selected as the new active tunnel. Keepalive should be enabled on the
tunnels to detect failures.
IPv6 tunnels are not supported in a tunnel-group.
