escape and thereby preserve quotes in values

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>
inital commit of __zypper_service
remove SFS from man page text ...
Merge pull request #219 from asteven/issue/219

__key_value removes quotes from values
++changes (3.0.0)

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
Merge pull request #220 from dheule/type__zypper_service

new type  __zypper_service
++changes (3.0.0)

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>