site_index class missing from build node

Add the site_index class back on the build node so a basic web site
will get properly created
Add puppet-coe module

Add back the puppet-coe module to include Cisco-specific custom
classes
Load class to disable unwanted quantum logging

Disable unwanted quantum rootwrap logs by default. Users can override if
desired.
Merge pull request #97 from rickerc/quantum_logging

Quantum logging