Add a small unittext extension for utils.RunCmd
Add a small unittext extension for utils.RunCmd

Reviewed-by: imsnah


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