Reduce actions fetching interval if the full page of action documents was fetched

[aleksmaus]

What does this PR do?

Reduce actions fetching interval if the full page of action documents was fetched. Otherwise the monitor waits for 1 secs (by default) until the next poll.

Presently the UPGRADE action is creating individual action documents for each agent, which will be slow to roll out if we delay for 1 sec between each 10 actions. Ideally we would group as many agents under one document as possible.
Talked to @nchaulet and this is on his to do list for kibana.

[elasticmachine]

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Build stats

• Build Cause: Pull request #82 updated

• • Start Time: 2021-02-03T16:03:06.726+0000

• Duration: 5 min 14 sec

• Commit: c61e2bd

Test stats 🧪

Test	Results
Failed	0
Passed	50
Skipped	0
Total	50

[scunningham]

Better than a ❄️

[blakerouse]

Looks good.