#7 Include kernel/network library
Merged by jheger. Opened by pemensik.
pemensik/beakerlib-libraries netns  into  master

Made as helper to already present networking-common library, which does
not offer rlImport backend. It is backward compatible with internal
kernel/network library. That is the reason why networking-common library
is not used for import, no such library exists internally.

Allows simplification of useful scripts to setup namespaces for use in testing.
Scripts like netns_1_net.sh would be straightforward to use.

Pull-Request has been merged by jheger