* pr/11515:
  Polish "Add Kafka health indicator"
  Add Kafka health indicator

Closes gh-11515

See gh-11515

The auto-configuration for a `UserDetailsService` and the web bits
has been split into two.

Closes gh-11915
Fixes gh-11891

Fixes gh-11931

Fixes gh-11908

Closes gh-11912

Closes gh-11913

* gh-11947:
  Polish

Closes gh-11946

Closes gh-11945

Closes gh-11944

Closes gh-11205

* pr/11910:
  Optimize ApplicationHome.isUnitTest()

Closes gh-11910

* pr/11922:
  Polish "Add influx property to govern whether db is auto-created or not"
  Add influx property to govern whether db is auto-created or not

Closes gh-11922

* gh-11886:
  Polish "Update deployment tests to include Actuator"
  Update deployment tests to include Actuator

Closes gh-11886

See gh-11886

Closes gh-11898

Closes gh-11890

Closes gh-11238

Closes gh-11933

Closes gh-11869

Closes gh-11941

Refactor `*ExportConfiguration` classes to be regular auto-configuration
classes.

Also removed the `@ConditionalOnProperty` guards for `.enabled` properties
since auto-configuration can now be excluded in the usual way. Enabled
properties remain where applicable and are adapted for Micrometer to use
as it sees fit.

Fixes gh-11838

Fixes gh-11929

Fixes gh-11926