
Adds new charm config option to enable multipath connections to iscsi volumes. This is configured in the [libvirt] section of the nova config. Since newton, the option has been renamed to 'volume_use_multipath'. To accomodate this, a newton template has been created. Change-Id: Ibbf91547c5fc41215873c63219cd83303b1d37cd Partial-Bug: #1518001