marquiz: nfd-master: allow sub-namespaces of the default label ns

JobBuild
536
08-10 08:42
pull-node-feature-discovery-build 1425014686528573440
pull-node-feature-discovery-build-gh-pages 1425014686599876608
pull-node-feature-discovery-build-image 1425014686566322176
pull-node-feature-discovery-verify 1425014686461464576
pull-node-feature-discovery-verify-docs 1425014686495019008