netdetect: Reporting selected subnet
netdetect: Reporting selected subnet

It's pretty interesting to know what subnet got used during the
benchmark. So let's report it.

Typical output is :
 ('network', 'tcp_bench', 'subnet', '10.66.6.0/24')

lebauce/edeploy,lebauce/edeploy,enovance/edeploy,lebauce/edeploy,enovance/edeploy,enovance/edeploy,enovance/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,lebauce/edeploy