This commit:
- Creates the "software deploy precheck" endpoint
- Implements a couple TODOs on the precheck code
- Replaces some hard-coded variables for constants
- Replaces "system" commands to retrieve system health
for sysinv client calls
- Creates separate health check classes for general and
upgrade-specific health checks
- Renames standalone precheck module to "deploy-precheck"
- Allows precheck module to receive keystone credentials
as parameters so that the precheck can be run against a
remote host (Use Case: system controller running precheck
against subclouds, but mind that DC support will be added
on a future commit)
- Creates an utility module that can be imported by standalone
USM upgrade scripts (copied to the ISO by [1])
Test Plan
PASS: run "software deploy precheck" and verify it returning
correctly, and verify that health checks output are valid
given the current system status
Story: 2010676
Task: 48902
Depends-on: https://review.opendev.org/c/starlingx/update/+/898474
Relates-to: [1] https://review.opendev.org/c/starlingx/tools/+/897484
Change-Id: I4d04804c1b1e147f486434df23a291c6d315842b
Signed-off-by: Heitor Matsui <heitorvieira.matsui@windriver.com>
ef0fe15e2d