This commit adds support for using `{vendor}` placeholder in
`flyway.locations` configuration property value.

See gh-6900

Closes gh-7694

* pr/6613:
  Polish contribution
  Add support for multiple beans in the Flyway and Liquibase endpoints

Closes gh-6613

Closes gh-6610
See gh-6613

Rework cb3d14a3 so that the customizer operates on the Builder rather than
the Cluster. The former exposes many more options.

See gh-7320
Closes gh-7669

* pr/7718:
  Polish @IntegrationComponentScan auto-configuration
  Add @IntegrationComponentScan auto-configuration

See gh-2037
See gh-7718

Update Spring Integration auto-configuration so that
`@IntegrationComponentScan` from `AutoConfigurationPackages` is
implicitly applied. Prior to this commit `@MessagingGateway` interfaces
would only get picked up if `@IntegrationComponentScan` was added
alongside with the `@SpringBootApplication`.

Fixes gh-2037
Closes gh-7718

* pr/7722:
  Polish Spring Integration metrics support
  Refactor Spring Integration metrics support

See gh-7722

Update Spring Integration metrics support since Spring Integration
`4.3.6`+ no longer needs `spring-integration-jmx` enable
`MessageChannel`, `MessageHandler` and `MessageSource` metrics.

- Add `IntegrationManagementConfiguration` conditional auto-configuration
  to provide `@EnableIntegrationManagement` when JMX is `enabled` or there
  is no `IntegrationManagementConfigurer.MANAGEMENT_CONFIGURER_NAME` bean.
  By default this bean doesn't exist and you explicitly should declare it
  (e.g. via `@EnableIntegrationManagement`) if you would like to collect
  metrics. At the same time Spring Integration enables it when JMX
  management is present (that is a purpose of that new
  `IntegrationManagementConfiguration`)

- Change `SpringIntegrationMetricReader` to read metrics from the
  `IntegrationManagementConfigurer`, not `IntegrationMBeanExporter`

- Change `PublicMetricsAutoConfiguration` to register
  `IntegrationManagementConfigurer.MANAGEMENT_CONFIGURER_NAME` bean if
  not present. Since we are here in `actuator`, therefore we are
  interested in the metrics for SI as well.

- Since we don't need JMX for the metrics any more, remove SI-JMX
  dependency from the `spring-boot-starter-integration`.

- Remove `IntegrationManagementConfiguration` modification from the
  `integrationMbeanExporter()`, since that looks like mutation of an
  external object, when end-user would prefer their own options.
  Therefore we don't need `ObjectProvider<IntegrationManagementConfigurer>`, too

- Add missed `MessageSourceMetrics` gathering for the
  `SpringIntegrationMetricReader`

Closes gh-7722

* pr/7723:
  Fix typo in Kafka sample
  Fix compatibility with Apache Kafka 0.10.1

* pr/7714:
  Polish

Update KafkaProperties since  Apache Kafka `0.10.1` changed the type
for the `ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG` from the
`Long` to `Integer`.

Kafka includes the following conversion logic:

    case LONG:
        if (value instanceof Integer)
            return ((Integer) value).longValue();
        if (value instanceof Long)
            return (Long) value;
        else if (value instanceof String)
            return Long.parseLong(trimmed);

So we remain compatible with both `0.10.0` and `0.10.1`

Closes gh-7723

Update the Tomcat logging test to be more like the real scenario.

See gh-7639

Closes gh-7721

Closes gh-7602

Update `SpringBootTestContextCustomizer` to use the full qualified
TestRestTemplate as the registered bean name. Prior to this commit it
was possible that the customizer would replace the relatively common
bean name `testRestTemplate`.

Fixes gh-7711

Update the RelaxedPropertyResolver used to load log properties so that
`${...}` patterns are ignored when possible.

Fixes gh-7719

Closes gh-7710

Closes gh-7707

See gh-7707

See gh-7710

Closes gh-7601

Closes gh-7716

* pr/7395:
  Polish `spring.redis.url` support
  Add support for `spring.redis.url` property

See gh-7395

Update `RedisAutoConfiguration` to optionally configure Redis using a
`spring.redis.url` property`.

Closes gh-7395

* pr/7544:
  Add more debug logging to DevTools

Add debug logging for the included and excluded URL patterns and
matching URLs.

Fixes gh-7478
Closes gh-7544

* pr/7634:
  Refine error message from Endpoint MVC security
  Send error with message from Endpoint MVC security

Update the error message to return less information to the client.
Details of how to disable security are now written to the log instead.

See gh-7605
See gh-7634