Comment 12 for bug 1547379

I just traced the error back and fixed as I went along. For me the error was:

+++lib/tls:source:43 hostname -f
hostname: Name or service not known
++lib/tls:source:43 DEVSTACK_HOSTNAME=
+++lib/tls:source:43 err_trap
+++./stack.sh:err_trap:517 local r=1
stack.sh failed: full log in /opt/stack/logs/stack.sh.log.2017-03-19-012504
Error on exit
./stack.sh: line 501: generate-subunit: command not found

so I went to lib/tls, line 43, and set removed the -f from my hostname command. Running 'hostname -f' in the shell returned an error.