1123468 - improve clone-by-date dependency resolution

clone-by-date now:
1) Recursively looks for dependencies for each channel tree to catch
   dependencies-of-dependencies.
2) Clones dependent errata instead of just packages to resolve dependency
   problems related to non-specific architectures and wrong-direction
   dependencies (see bz for details).
Automatic commit of package [spacewalk-utils] release [2.3.3-1].