Add openAll() and applyConfig() methods to Transport
openAll() method honours many URIs in remote configuration when opening
transports. Old open() calls remained, they still open only 1 transport
at time.
openAll() is used during push operation - pgm.Push implementation was
fixed to use it.
applyConfig() is used internally here, but could be interesting for
clients and it's safe to call it.
Signed-off-by: Marek Zawirski <marek.zawirski@gmail.com>
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>