- Bump version: 9.19.6 → 9.19.7

- Fixed swap setup if btrfs is used
In case of a volume manager the simplified variant of the
device name is used in the fstab file to reference the
swap device. However this is only correct for the lvm
volume management but not for btrfs. In case of btrfs
the swap space is not a subvolume but a real partition
and thus the simplified device spec in fstab puts in the
loop mapped device which is wrong. This patch fixes it

- Exclude 'Recommends: kiwi-man-pages' for EL7 and older in the spec

- Fixed xz options syntax in default kiwi.yml
xz options are passed as a string and splitted in code
but not handled as yml list

- Fixed scope of kiwi-man-pages sub package
The kiwi-man-pages package provided data that belongs to
the main package, e.g the completion as well as the
license information. In addition kiwi-man-pages should
not be a requirement.

- Fixed result map for OEM pxe install
The result map for OEM images with installpxe enabled
contained a wrong file name. Thus the result bundler
was not able to fetch the tarball

- Open image files in UTF-8
Post image build metadata like the packages file which are