Added puppet_master_install and puppet_agent helpers

Signed-off-by: Ken Barber <ken@bob.sh>
Use correct package name for debian family

Signed-off-by: Ken Barber <ken@bob.sh>
Use /etc/init.d/ for rhel5

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #2 from kbarber/puppet_master_agent_helpers

Added puppet_master_install and puppet_agent helpers