Revert "Install packages with 'action :upgrade'"

As agreed during a community call, we want to use :install to allow
upgrades being controlled instead of automatically installed.

This reverts commit 40cc06afd8f275214547d6a0e9f8b5ae4b142fee.
Merge pull request #8 from vuntz/use-install-action

https://github.com/crowbar/barclamp-database/pull/8

Merged by devtool for cloudsleuth