Handle containers with different network drivers

[pooya]

There is no guarantees that the ep and extEp are using the same driver.
If they are not using the same drivers, the driver for ep will not know
about the networks of extEp and fails the RevokeExternalConnectivity
call.

Signed-off-by: Shayan Pooya [email protected]

[aboch]

Thank you for finding this and your contribution.

I think the same applies in the sbLeave() at

    // New endpoint providing external connectivity for the sandbox
    extEp = sb.getGatewayEndpoint()
    if moveExtConn && extEp != nil {
        log.Debugf("Programming external connectivity on endpoint %s (%s)", extEp.Name(), extEp.ID())
        if err := d.ProgramExternalConnectivity(extEp.network.ID(), extEp.ID(), sb.Labels()); err != nil {
            log.Warnf("driver failed programming external connectivity on endpoint %s: (%s) %v",
                extEp.Name(), extEp.ID(), err)
        }
    }

[pooya]

Thanks @aboch . Amended the commit to include a fix for the issue in sbLeave().
However, looks like there are some issues with the dependencies, I'll rebase on master and repush.

[aboch]

Thanks for this fix.
Tested it.

LGTM