[tripleo-undercloud] Optimise the undercloud package install tasks
[tripleo-undercloud] Optimise the undercloud package install tasks

We also consolidate the package install tasks into a single
task which installs all packages at once to be more efficient,
reducing execution time.

Change-Id: Ief4ed307a8ff9fe682b5178dcd709d5aa2ef05ca

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared