This closes #11545.

This closes #11820.

This closes #11577.

[FLINK-9656][scripts] Add DEFAULT_ENV_JAVA_OPTS_CLI & KEY_ENV_JAVA_OPTS_CLI to read env.java.opts.client from flink-conf.yaml

'head' with a negative '-n' argument isn't standardized.

This closes #11445.

This closes #11333.

This closes #11300.

Some noise reduction.

This allows us to specify multiple executions that copy different file sets without having to worry what side-effects it may have.

We build a separate jar for BashJavaUtils with bundled log4j classes and
a configuration that logs to the stdout. Using this jar we run the
utility to capture the output. Out of the last line we extract jvm
parameters. The rest we pass as an environment variable (INHERITED_LOGS)
to the TaskManager process.

As part of the EnvironmentInformation printing we log whatever was
passed through the INHERITED_LOGS in the TM/JM process.

This closes #10850

[FLINK-15145][dist][config] Increase the TM process memory size in default flink-conf.yaml to 1568MB.

- Correct the description of process memory size.
- Provide the alternative flink memory size.

[FLINK-15517][Runtime][Configuration][Network] Use back 'network' in 'shuffle' memory config option names

This avoids that log messages to stdout intermingle with BashJavaUtils'
computation result which is also printed to stdout.

This closes #10804.

FLINK-14905 introduced a multi-release approach to bundle libraries
for different JDK versions. However, the multi-release flag was not
correctly set, which effectively disabled the mechanism and lead to
incomplete dependencies on Java 11. This commit fixes the setup, such
that the Java 11 libraries are correctly loaded.