add -h flag for no header in flux resource drain for streamlined monitoring

[Raj-Bagri1]

much like sinfo -h if we can add a -h flag to flux so that when running flux resource drain the header does not appear so when running it in a script across all clusters, the header does not continue to output everytime. For example the output would go from this;

TIMESTAMP STATE RANK REASON NODELIST 2022-09-11T09:06:44 drained 15 broker was unresponsive fluke18 2022-08-15T15:57:08 drained 63 broker was unresponsive fluke66

To this;

2022-09-11T09:06:44 drained 15 broker was unresponsive fluke18 2022-08-15T15:57:08 drained 63 broker was unresponsive fluke66

[garlick]

Good idea!

Since -h often used for help, I'd vote we be consistent with flux-jobs(1) which has:

      -n, --suppress-header
              For default output, do not output column headers.

[Raj-Bagri1]

I agree being more consistent would be better

[chu11]

while we're at it, should we introduce more things to make flux resource and flux-jobs more alike? (Edit: also taking #4673 in mind here). thoughts that come to mind:

• named formats
• extra verbosity turned into --format=long

[grondo]

Good points @chu11. I looked at this as part of #4670, but there are very few available fields for flux resource list|drain so it seemed like a fair bit of code for little benefit. (Note however, this issue is about flux resource drain not flux resource list, which already has a -n, --no-header option)

[grondo]

Actually after reading the other issue @chu11, maybe you have a point...