Add alert rules for Dell DRAC and OME-M sensors

[bionicman]

Simple state alert rules for Dell DRAC and OME-M hardware. All alerts have critical and non-critical (warning) versions.

List of alerts:

• Dell DRAC amperage probe status
• Dell DRAC global system status
• Dell DRAC memory device status
• Dell DRAC physical disk state
• Dell DRAC processor device status
• Dell DRAC system battery status
• Dell DRAC virtual disk state
• Dell OME-M blade status
• Dell OME-M fan status
• Dell OME-M global system status
• Dell OME-M IOM status
• Dell OME-M MM status
• Dell OME-M power status
• Dell OME-M PSU status
• Dell OME-M redundancy status
• Dell OME-M temperature status

Tested with JSON lint, I didn't understand how to check only the alert rules.

Please note

Please read this information carefully. You can run ./lnms dev:check to check your code before submitting.

• Have you followed our code guidelines?
• If my Pull Request does some changes/fixes/enhancements in the WebUI, I have inserted a screenshot of it.
• If my Pull Request makes discovery/polling/yaml changes, I have added/updated test data.

Testers

If you would like to test this pull request then please run: ./scripts/github-apply <pr_id>, i.e ./scripts/github-apply 5926
After you are done testing, you can remove the changes with ./scripts/github-remove. If there are schema changes, you can ask on discord how to revert.

[PipoCanaja]

LGTM but not tested