Steve Baker 3e03e3b78c Add --concurrency argument to introspect commands
The default concurrency of 20 may be too high for small underclouds
(especially CI environments), so this change adds a --concurrency
argument so callers can control the maximum number of nodes
to introspect concurrently.

Depends-On: https://review.opendev.org/#/c/672389/
Change-Id: I9faee9ab133e34466a79aa1176a16106bda1f15d
Closes-Bug: #1836976
2019-07-24 21:10:58 +00:00
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