Bump version to 0.16.2
Fix a bash bug introduced in 64078dcb0ee954ba5d0d4
Do not verify the presence of img_properties

img_porperties is not a mandatory parameter for diskdumps any more.
docs: Add PITHCAT_UMASK in the sample config file
Update ChangeLog and version files for v0.16.2
Merge branch 'hotfix-0.16.2'