This closes #12907

 Brief change log:
  - remove the scala version suffix for connector-hive and queryable-state-client-java
  - add the scala dependencies for table-api-scala and flink-sql-connectors
  - correct the scala-free check logic in `verify_scala_suffixes.sh`

The relocations are a no-op since no dependencies are bundled, nor are any classes that are relocated referenced in this module.
The dependency-reduced-pom.xml is not used by anyone, since we neither deploy or nor any other module depends on it.

As such the shade-plugin configuration is not necessary here.

This also adadpts update_branch_version.sh to correctly update versions
that have a prefix.

This is to prevent user code from clashing on Netty which we did shade away
using its old namespace: org.jboss.netty. Hadoop >= 2.7, however, upgraded
Netty and rely on the new package: io.netty.

The detached flag if given by "-yd" was not passed correctly into the
CliFrontend and resulted in the CLI waiting for submitted jobs to finish instead
of detaching from the execution.

[FLINK-8872][yarn] add tests for YARN detached mode command line parsing with CliFrontend

- create a test-jar of flink-clients
- create CliFrontendRunWithYarnTest based on CliFrontendRunTest that verifies
  CliFrontend's parsing in conjunction with FlinkYarnSessionCli
-> verify detached mode in this test (can be extended further in the future)

This closes #5672.

Read the default TaskManager memory and number of slots from the configuration
when the YarnResourceManager is started.

This closes #5625.

The flip6 build profile only runs the Flip-6 related test cases. Moreover,
all Flip-6 related test cases are excluded when not running the flip6 build
profile. This should reduce testing time when adding more and more Flip-6
test cases.

Include flink-test-utils-junit in all submodules to make the Category marker interfaces Flip6 and OldAndFlip6 available

This closes #4889.

This closes #5020.

Before, we had it in places that require it. This doesn't work when
running mvn javadoc:aggregate because this will only run for the root
pom and can then not find the "bundle" dependencies.

Disable it in most modules.

This closes #4923.

We can do this now that we dropped support for Scala 2.10.

This closes #4807

Add dependencies for batch and streaming WordCount programs and copies
the jar files into a new target/programs directory. The integration
tests now directly references the program jar files rather than the
prior brittle search.

This removes the flink-yarn-tests build-time dependency on the examples
modules (there remains a build-time dependency on flink-dist).

This closes #4264

Update Hadoop versions and replace Hadoop 2.3 with 2.8 in build and
continuous integration scripts. flink-yarn-tests can now be enabled for
all supported Hadoop versions and is made non-optional.

This closes #3832

This closes #4005.