[FLINK-37709][metrics] add file descriptor jvm metrics

[HuangZhenQiu]

What is the purpose of the change

Add file descriptor related JVM metrics

Brief change log

• Add the default registration in MetricUtils
• Added test in MetricUtilsTest

Verifying this change

This change added tests and can be verified as follows:

• Added test in MetricUtilsTest

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (docs)

[flinkbot]

CI report:

• a21e6f5 Azure: SUCCESS

Bot commands

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• @flinkbot run azure re-run the last Azure build

[mxm]

LGTM

[leonardBang]

CI passed, merging...