Do not resize the disk if an attempt to resize to the same
size was made. Do not fail in this situation but indicate
via a bool return value if an action has happened(True)
or not(False)
Stay compatible with the former version of kiwi and do not
compress disk formats like qcow2, vmdk, etc... It also does
not make much sense since the disk formats itself are using
a compression algorithm. Fixes#159
Add a generic store_to_result method which allows to store
the format result files into an instance of Result. This
allows to customize result handling per format when needed
nose is no longer maintained, thus we have to move to another
testing system. This commit updates the tox setup and all tests
to use pytest instead of nose.
