Matt Riedemann df2845308d Change nova-manage unexpected error return code to 255 ... If any nova-manage command fails in an unexpected way and it bubbles back up to main() the return code will be 1. There are some commands like archive_deleted_rows, map_instances and heal_allocations which return 1 for flow control with automation systems. As a result, those tools could be calling the command repeatedly getting rc=1 thinking there is more work to do when really something is failing. This change makes the unexpected error code 255, updates the relevant nova-manage command docs that already mention return codes in some kind of list/table format, and adds an upgrade release note just to cover our bases in case someone was for some weird reason relying on 1 specifically for failures rather than anything greater than 0. Change-Id: I2937c9ef00f1d1699427f9904cb86fe2f03d9205 Closes-Bug: #1840978		2019-08-21 17:03:11 -04:00
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notes	Change nova-manage unexpected error return code to 255	2019-08-21 17:03:11 -04:00
source	Use a less chipper title for release notes	2019-07-26 20:19:05 +00:00