Ensure that mount point is really unmounted
Ensure that mount point is really unmounted

Scaling tests sporadically fails with the message "Transport endpoint is
not connected". It seems to be resolved by forcing a umount so that is
what this commit does.

See https://stackoverflow.com/questions/24966676/transport-endpoint-is-not-connected

Signed-off-by: Thomas Hallgren <5f50a84c1fa3bcff146405017f36aec1a10a9e38@tada.se>

datawire/telepresence,datawire/telepresence,datawire/telepresence