This update for the Softwarestack fixes the following issues:

zypper:

- Fix testing for '-- download*' options (boo#956480)
- versioncmp: Don't check for zypp lock (boo#970575)
- man: Rephrase unclear explanation of --non-interactive (boo#969186)
- man: add missing --non-interactive-include-reboot-patches option

libzypp:
- Provide 'libzypp(plugin:services) = 1' after fixing boo#933760
- Fix credential file parser losing entries with known URL but different user name (boo#933760)
- RepoManager: allow extraction of multiple baseurls for service repos (boo#964932)
- addRepository: fix to use the correct history file for logging
- DiskUsageCounter: Limit estimated waste per file (boo#974275)
- Filter unwanted btrfs subvolumes (boo#949945)
- Use PluginExecutor for commit- and system-hooks (boo#971637)
- BuildRequires: libsolv-devel >= 0.6.19 (boo#971018)

libsolv:

- Better support of complex deps in pool_match_dep and selection_make_matchdeps
- Make SOLVER_REASON_CLEANDEPS_ERASE introspection reason work again
- Make dep2str use rpm-like output if disttype is rpm
- Implement filtering of Requires(pre,post) for installed packages
- Simplify handling of pseudo package updates (boo#967006)
- Improve speed of rpmmd metadata parsing