Added SuSEfirewall2 sysconfig configuration

- bnc#887406
- added /etc/sysconfig/SuSEfirewall2
- SuSEfirewall2 services (SSHD, VNC) are already added
Merge pull request #22 from kobliha/add-firewall-and-sshd-sysconfig

Added SuSEfirewall2 sysconfig configuration