Quarkus extension and Spring Boot test support improvements

Merge pull request #290 from java-operator-sdk/timertestfix

Increase test timer slack time to make test not fail

Addresses a crasher with the Quarkus extension

Merge pull request #265 from java-operator-sdk/fix-264

Fixes #264

Initial Quarkus extension

This release re-organized the way the code is structured to provide a Quarkus extension called operator-framework-quarkus-extension.

It also initiates changes in the way configuration of controllers are defined, with the possibility of externalizing configuration (not completely implemented yet).

Finally, it renames the Spring Boot starter to operator-framework-spring-boot-starter to conform to Spring Boot's conventions.

v1.5.0

Updates:

• Retry functionality: #252
• Various other improvements

v1.4.0

This release contains fundamental changes to the framework:

• Introducing Event Sources: re-worked core to support watching resources (other than custom resource) in an extensible way
• Improvements on Quarkus support
• We dropped java 8 support (minimal version is now java 11)

See also:

• #188
• #232

v1.3.0

This is a quite big release, what contains also API changes. The most important improvements are:

• Support for status sub-resource updates: https://github.com/ContainerSolutions/java-operator-sdk/issues/93
• Provides a better API for retry state
• We add finalizer before executing the controller method

Fixes also issues like:

• https://github.com/ContainerSolutions/java-operator-sdk/issues/136
• The scheduling algorithm became much simpler by handling generations differently

This release includes new package name and artifact group id

v1.2.3

• This is a service release, updated versions of dependencies.
• Mainly openshift-client to 4.10.2

v1.2.2

bug fix with scheduling: https://github.com/ContainerSolutions/java-operator-sdk/pull/100

v1.2.1

Improvement on a minor memory issue, see:
https://github.com/ContainerSolutions/java-operator-sdk/pull/98

v1.2.0

Improved event processing: Generation Aware Scheduling:
https://github.com/ContainerSolutions/java-operator-sdk/issues/81