fix for default debian installations
all files in /etc/apt/preferences without _ will be silently ignore according to debian manpage. Addionally its not a good idea to write versionnumber in filename cause there is no way to delete this files if you increase versionumber
Update source_spec.rb
add a way to include debsrc only (useful for debian/ubuntu build server ... jenkins ect)
Update source_spec.rb
var rename
Update source.list.erb
add include_deb "switch"
Update source.pp
"include_deb" defaultvalue = true
Update hold_spec.rb
change the name of the preferences file (hold)
Update source_spec.rb
Update README.md
Doku: 'include_deb' included next to 'include_src' in examples
Update README.md
typo
