The bind pool information is now automatically generated and the
variables and sample config files are no longer needed. Matching bind9
and rndc key configuration is also generated.
Note: this patch also removes the use of puppet-dns which is problematic
when bind and the worker aren't on the same host and is awkward to use
with respect to rndc keys. It also modifies yaml-validate.py to correct
a rule changed with respect rndc_allowed_addresses.
Depends-On: Ib121888061b8bfcc4155528a8a209c7e274fafcb
Depends-On: I3383c19f80e70553ae71e644a01dda0f250d19da
Depends-On: I1b6674acbd6f999474cd66cb44357cf6b756a7d0
Change-Id: Ib89bcafe9f65431aee5756a32b2a82adc3d384dc
7de18e52cd