Make ncm-network depend on bridge-utils

We need very often brctl, and on minimal installations we may forget
about it.
Merge pull request #121 from piojo/authconfig-fix

Fix printing of the URI field on NSLCD configs
Relax the repository-specific proxy field.

Having empty strings allows to disable the global proxy if some
repository shouldn't have any.
Escape hostgroup names in the validation.

The component expects the hostgroup name to be escaped.
Merge pull request #124 from piojo/icinga-escape

Escape hostgroup names in the validation.
Merge pull request #123 from piojo/spma-schema-fix

Relax the repository-specific proxy field.
Bump the build tools
Merge pull request #127 from piojo/network-deps

Make ncm-network depend on bridge-utils
Merge pull request #126 from piojo/bump-buildtools

Bump the build tools
Merge pull request #2 from quattor/master

Update to 13.1.2