1104087 - [RFE] spacewalk-repo-sync can obtain channel and repo set from a configuration file.

This [RFE]  implements the following features:
     - possibility to specify more then channel to sync in configuration file
          # spacewalk-repo-sync   -c example_ch  --config example.conf
     - possibility to specify more than one repository url for a channel from command line
          #  spacewalk-repo-sync   -c example_ch  --url  http://example.redhat.com --url http://example_1.redhat.com
    - updates the man page with examples for all possible usages of spacewalk-repo-sync