BUGFIX - multiple fixes for koan, ubuntu, and suse

* Fixing koan for opensuse (os_version issues, install tree issues)
* Fixing koan for ubuntu (os_version issue)
* Fixing suse snippets for profile installations
* Fixing distro_signatures for suse (required install= in kopts)
* Fixing XML syntax errors in sample_autoyast.xml
Merge pull request #486 from jimi1283/miscimprovements

BUGFIX - multiple fixes for koan, ubuntu, and suse