(#11693) Add package_ensure param to glance class
(#11693) Add package_ensure param to glance class

This commit adds a class parameter to specify
what the ensure state of the glance package should
be.

This parameter has been added to allow a user to
specufy rather or not glance should be upgraded.

SmartInfrastructures/fuel-library-dev,stackforge/fuel-library,huntxu/fuel-library,Metaswitch/fuel-library,huntxu/fuel-library,xarses/fuel-library,zhaochao/fuel-library,stackforge/fuel-library,eayunstack/fuel-library,huntxu/fuel-library,stackforge/fuel-library,eayunstack/fuel-library,zhaochao/fuel-library,stackforge/fuel-library,SmartInfrastructures/fuel-library-dev,Metaswitch/fuel-library,ddepaoli3/fuel-library-dev,Metaswitch/fuel-library,huntxu/fuel-library,ddepaoli3/fuel-library-dev,xarses/fuel-library,ddepaoli3/fuel-library-dev,slystopad/fuel-lib,xarses/fuel-library,Metaswitch/fuel-library,huntxu/fuel-library,ddepaoli3/fuel-library-dev,slystopad/fuel-lib,ddepaoli3/fuel-library-dev,slystopad/fuel-lib,eayunstack/fuel-library,xarses/fuel-library,eayunstack/fuel-library,zhaochao/fuel-library,eayunstack/fuel-library,slystopad/fuel-lib,SmartInfrastructures/fuel-library-dev,SmartInfrastructures/fuel-library-dev,SmartInfrastructures/fuel-library-dev,zhaochao/fuel-library,zhaochao/fuel-library