Merge pull request #113 from dirkmueller/master

Use the SUSE-CLOUD iso in case there are multiple ones
qa_crowbar: Move SLES repos handling to function

Preparation for adding local repository support.
qa_crowbarsetup: Add possibility to ignore mounts

For some cases it's needed to just bind or nfs mount. This is useful for
the upcoming deps image support.
qa_crowbar: Add local repos support for SLES repos

Use the extracted deps image as source for Cloud dependencies.
added function for preparation of SLE12 repositories

target_platform is "suse-12.0"
only for >= cloud5

create repos that are not available via nfs

add SLES12-Pool as empty
remove options that are not valid for btrfs
Merge pull request #114 from jsuchome/sles12

added function for preparation of SLE12 repositories and install one SLE12 node
Support for cloud5
update list of cloudsources
Make installation of SLE12 nodes optional

And default to off, since it doesn't work yet.