Allow use template variables in dictionnary key

This patch allows to use template variables in dictionnary key.

This fix the usage of template variables in JClouds template instance name.

Fixes bug #1239688

Change-Id: I395e6dcfa008e770d72e4e671ea85085ef6cffe5
publishers: correct XML element for boosttest xunit

The xUnit publisher (introduced by 2736e149) add a copy paste issue that
caused the 'boostest' type to use an XML element named
AUnitJunitHudsonTestType instead of BoostTestJunitHudsonTestType.

Closes-Bug: 1239121
Change-Id: I612075f5327025136d161dd60653a4f8edabb772
Merge "Allow use template variables in dictionnary key"
Merge "publishers: correct XML element for boosttest xunit"
Merge branch 'master' of github.com:openstack-infra/jenkins-job-builder