(#7485) Support zypper 0.6 with zypper package provider
Zypper version 0.6.104 which is the default version on SLED 10 does not
support the --quiet flag. It only supports the --terse flag from
rug.
Zypper version 0.6.13 on OpenSuSE 10.2 does not support the auto agree
with licenses and this flag is not used.
Tested on:
SLE 10.2, 11.0, 11.1
OpenSuSE 10.2, 10.3, 11.1, 11.2, 11.3, 11.4