Fixes #3254 - Split logic of configuration of Package Manager and configuration of repositories and merge repository configuration of Rug and Zypper
Merge pull request #140 from nperron/ust_3253/dev/3254_split_techniques_rug_and_zypper_to_three_techniques

Fixes #3254 - Split logic of configuration of Package Manager and configuration of repositories and merge repository configuration of Rug and Zypper
Merge branch 'branches/rudder/2.6' into branches/rudder/2.7