Fixed an overflow bug with the client timeout
Fixes issue with XSD

Only a single interface was allowed in network/interfaces in the XSD. I have changed it
by setting the max occurrence to unbound.
Merge pull request #941 from pveentjer/fix/3.x/xsd-only-single-interface-allowed

Fixes issue with XSD
Merge pull request #939 from pveentjer/fix/3.x/client-timeout-overflow-bug

Fixed an overflow bug with the client timeout