Support for BGP Sync

[ocobles]

After creating a connection to Azure and configuring BGP peering, it requires a synchronization process to start working. Currently there is an automatic job running each 5 min to auto sync, however some customers are using the API call described here step-3-setup-microsoft-peering-0 to instantly synchronize the connection

This is especially necessary to configure a hybrid architecture using the equinix terraform provider, otherwise it would be necessary to use a workaround like adding a time_sleep to wait for the automatic synchronization, or at least to remove ConnectionStatusPendingBGPPeering from https://github.com/equinix/terraform-provider-equinix/blob/master/equinix/resource_ecx_l2_connection.go#L469 to ensure that the connection will be marked as completed only once after syncing

[displague]

Support for PATCH /ne/v1/l2/connection/bgpSync sounds useful.

We have the same need in packngo: equinixmetal-archive/packngo#316 (comment)