Remove usage of reserved key word 'family'
Remove usage of reserved key word 'family'

An old hlint version (1.8.28) was complaining about the
word 'family' being used in the network tests. Thanks to
an epiphany of Iustin this was due to that it is a reserved
key word.

Signed-off-by: Helga Velroyen <2d0126b1ec6f9ec5cbec4a7012aa14faeaef10f5@google.com>
Reviewed-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>

yiannist/ganeti,leshchevds/ganeti,ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,apyrgio/ganeti,leshchevds/ganeti,ganeti/ganeti,mbakke/ganeti,apyrgio/ganeti,yiannist/ganeti,andir/ganeti,andir/ganeti,mbakke/ganeti,leshchevds/ganeti,grnet/snf-ganeti,ganeti-github-testing/ganeti-test-1,mbakke/ganeti,apyrgio/snf-ganeti,andir/ganeti,yiannist/ganeti,dimara/ganeti,ganeti/ganeti,onponomarev/ganeti,bitemyapp/ganeti,ganeti/ganeti,dimara/ganeti,apyrgio/snf-ganeti,grnet/snf-ganeti,bitemyapp/ganeti