Install cloud-archive repository manually

Removed using the apt-add-repository tool due to differences in versions
and package names. Using this tool would require checking if the trusty-updates
repository was enabled and add an additional step to enable the repo if it was
no enabled.

Change-Id: I75c486b80ecaff81ab7afd835934c1697f2dc91b
related-bug: 1350291
closes-bug: 1396460
backport: juno
(cherry picked from commit 49b225d9a04b7d2423773a47fa7de10e8ae04f76)