Update test 39.18 infrastructure to enable tests.
Add better debugging capabilities.
Fix some broken tests due to the change.

Bug 7345

Base GRES type off of device name instead of brand name.
Make the device name lower case and replace spaces with underscores.
Truncate system-detected device names so they match GRES types in
slurm.conf (important for FastSchedule 0 and 1).

Bug 7345

Co-authored-by: Michael Hinton <hinton@schedmd.com>

Extra len_if_known can be used to avoid an additional strlen()
call (expensive on large strings) against str if the calling
location already knows this value.

Bug 6932.

options with '=' in them.

This apparently never was added even though it was documented.

Bug 7457

Bug 7457

When deleting associations and permission is denied, we weren't properly
handling the error in sacctmgr, so it would prompt to commit the changes
even though it already printed a permission denied error.

Bug 7413

Bug 7263

Partially reverts commit cb901366 and d8097da9.

Bug 7461

The early assertion fail prevented batch job launch or tasks launch on
non-Linux systems.

Bug 7471.

Bug 7429.

IP address if the reverse lookup fails.

Bug 7255.

Rewrite of commit f35bb686.

Bug 7340.

Wrapping the plugin interface with an #ifdef block as was previously
done still results in the plugin being generated, but without any
of the plugin symbols present. This will then cause errors when
running user commands similar to:
error: Couldn't load specified plugin name for switch/cray_aries: Plugin name/type/version symbol missing

Bug 7017.

Bug 7017.

Bug 7017.

Bug 7017.

Variable only used within #if HAVE_PTY_H, and thus causes build failure
if building without <pty.h>.

Bug 7017.

Bug 7017.

Needed for WTERMSIG macro.

Bug 7017.

Bug 7017.

Bug 7017.

Bug 7320

Bug 7320

This makes it so that the backup will reinint the fed_mgr and load fed
state when a backup takes over on subsequent takeovers.

Bug 7320

Bug 7441.

Bug 7441.

Bug 7441.

Bug 7441.