Fixes #5386: rudder-agent 2.11.{0,1} ignore duplicate lines in data files causing rpmPackageInstallation technique to ignore some configurations
Merge pull request #460 from jooooooon/bug_5386/rudder_agent_2_11_0_1_ignore_duplicate_lines_in_data_files_causing_rpmpackageinstallation_technique_to_ignore_some_configurations

Fixes #5386: rudder-agent 2.11.{0,1} ignore duplicate lines in data file...