autoyast2: twp bugfixes

autoyast2 was updated to 2.22.6 fixing two bugs:
- prevent crash due to uninitialized libstorage
- prevent cloning of /dev/tmpfs storage container (bnc#776365)

Fixed bugs
bnc#776365
autoyast2 stops at: device /dev/tmpfs not found by storage backend.
Selected Binaries
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