retries only works with until.

Change-Id: I350ee69b0eca7a1763bb7eab34f874d7e22c1340
Closes-bug: #1668023

nova-compute will try to connect nova-conductor when upgrade.level is
auto. So nova-conductor need run more earlier. Otherwise, nova-compute
will failed to connect nova-conductor through message queue.

Closes-Bug: #1665836
Change-Id: If6296a84305bc283fb071b9650e629c6b1b71e61

Change-Id: Ied1af4c8ab3012fc5893905795590b53227fb26e
Closes-Bug: #1666123

Closes-Bug: #1660987
Depends-On: I30efc20e6d918e08860584c017455e6d5fa91a35
Change-Id: If0a79b6013f28871dc9f13c510c919078f3304d5

Change-Id: Ida7c955d9ddf7b7dc3289001958326c38c62d0c9
Partially-implements: blueprint better-reconfigure