installer: versioin conflict between required and dependency

[zprogd-zz]

If package has dependency, we will install last version of that dependency from our parcel repo. At the same time if in command line we require not the last version of that dependency we will get an error: perl/Any-Moose=0.21 already installed. Cannot install new version: 0.27

[zprogd-zz]

We need to create dependency tree for packages for installation and merge versions: take required version first or the last parcel's version if not defined.