Update Rails Health Monitor to use new built in Solr monitor

[carolyncole]

What maintenance needs to be done?

Level of urgency

• [ ] High
• [x] Moderate
• [ ] Low

Why is this maintenance needed?

• It will be better to utilize the built in monitor so we get upgrades and stay current with our colleagues. Thanks @maxkadel

Acceptance criteria

• [ ] Remove the custom Solr health Monitor
• [ ] Configure the built in Solr health monitor
• [ ] Solr is still monitored

Implementation notes, if any

Check out the docs

[maxkadel]

See also - where we added it to Orangelight

[carolyncole]

😢 Deleted the alias to test and neither our test nor the built in test actually failed