JIRA: https://jira.spring.io/browse/INT-4438
The `SmartLifecycleRoleController` is based on the `MultiValueMap`
which used internally a `List` for the values.
With such an architecture we can add the same value several times.
On the other hand we are iterating over `Lifecycle`s in the role and
build a `Map` for their running status.
In this case when `NamesComponent`s return the same name the Java
`Collectors.toMap()` fails with a duplicate key error.
In any cases it would be better do not allow to add the same lifecylce
several time to the role or different with the same name.
* Add search logic to the `addLifecycleToRole()` to fail fast with the
`IllegalArgumentException` because a lifecycle with the same name is
already present in the role
**Cherry-pick to 5.0.x**
* Remove redundant `this.initialized = false` from the
`AbstractPollingEndpoint.doStop()`
Add `allEndpointsRunning()` verification to the `EndpointRoleParserTests`
Polishing
29b60c2932