[O11y][Apache Spark] Add metric type mapping for driver datastream

[harnish-crest-data]

• Enhancement

What does this PR do?

This PR adds metric_type mapping for the fields of the driver data stream.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

To verify the metric_type, please refer to the below mbeans type that is used for data collection

driver_mbean.txt

• Relates Apache Spark TSDB Enablement #7786
• Relates [O11y][Apache Spark] Add metric_type across package #7408

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• Start Time: 2023-10-12T12:21:32.564+0000

• Duration: 19 min 55 sec

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Name	Metrics % (covered/total)	Diff
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Classes	100.0% (0/0)	💚
Methods	75.0% (12/16)	❕
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[ali786XI]

LGTM

[agithomas]

@harnish-elastic , similar to #7794, is there a source of metric_type you have for reference?

[harnish-crest-data]

@harnish-elastic , similar to #7794, is there a source of metric_type you have for reference?

@agithomas Since the MBean list is too large to mention in the PR description, I have already attached the file of the metric_type in the description itself.

[agithomas]

LGTM!

[elasticmachine]

Package apache_spark - 0.7.3 containing this change is available at https://epr.elastic.co/search?package=apache_spark