To improve the chances of success during builds, retries
are added to the package install tasks. Also, given that
we're using Ansible > 2.1.x, we forgo the with_items loop
for the package installs and just give the package module
the list so that it installs them all at once. Finally,
we ensure that the 'name' argument is used for all package
lists rather than the 'pkg' argument which is for apt only.
Change-Id: I5f27ea0b05c70f6c5396bd41dfe3cce54579ccb3
2a21711f04