fix to juju plugin

Description: Fix to juju plugin

Bring in the enhancements to the juju plugin from 3.2-alpha

Author: Jorge Niedbalski <jorge.niedbalski@canonical.com>
Bug-Ubuntu: http://bugs.launchpad.net/bugs/1363155

Signed-off-by: Louis Bouchard <louis.bouchard@canonical.com>
merge patched-ubuntu/utopic into ubuntu/utopic
change version to 3.1-1ubuntu4.14.10.1
debian/patches/fix-to-juju-plugin.patch
Bring in the enhancements to the juju plugin from 3.2-alpha
(LP: #1363155)