added _init_dev_hosts() and fixed _cname_join error
added _init_dev_hosts() and fixed _cname_join error

_init_dev_hosts relies on radia_run redhat-docker config being
a particular way (/etc/docker/tls/{cert,key.pem} is self-signed)
must have sudo access to get the files
Outstanding error:
_poll_running_jobs parallel: PROGRAM ERROR: running=1 available=1 queued_jobs=0

mkeilman/sirepo,radiasoft/sirepo,radiasoft/sirepo,radiasoft/sirepo,mkeilman/sirepo,mkeilman/sirepo,mkeilman/sirepo,mrakitin/sirepo,radiasoft/sirepo,mrakitin/sirepo,radiasoft/sirepo,mrakitin/sirepo,mrakitin/sirepo