adding a allow forward option to a zone
Adding the stdlib dependency

This module was already used trough the array_validate in zone.pp.
It is now explicitely declared in the Modulefile.
correcting a typo
correction on the forwarder name
correction on the forwarder name
validate the allow forwarder option
adding test for the forward option
tab to space
change the variable name accordingly in the template
adding a policy setting for the forwarder
fixing the forwarders accordingly
correcting the test accordingly to the new options
adding more test
correcting the test
correcting the except
empty forwarder
fixing the erb template
no forward policy fix
better sentence
a bit of documentation with an example