schedule_suite.sh: add flavors, check/fix sha1s, optional templates
schedule_suite.sh: add flavors, check/fix sha1s, optional templates

This should be everything we need to use this for the nightlies, with the
exception of updating the git trees, which can happen explicitly in the
crontab.

zhouyuan/teuthology,tchaikov/teuthology,robbat2/teuthology,dreamhost/teuthology,SUSE/teuthology,ceph/teuthology,ceph/teuthology,ktdreyer/teuthology,yghannam/teuthology,tchaikov/teuthology,SUSE/teuthology,zhouyuan/teuthology,yghannam/teuthology,michaelsevilla/teuthology,dreamhost/teuthology,SUSE/teuthology,michaelsevilla/teuthology,dmick/teuthology,ktdreyer/teuthology,ivotron/teuthology,caibo2014/teuthology,ivotron/teuthology,dmick/teuthology,t-miyamae/teuthology,caibo2014/teuthology,dmick/teuthology,t-miyamae/teuthology,robbat2/teuthology