[receiver/apachespark] Add support for SKIPPED state status in apachesparkreceiver

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Component(s)

No response

Is your feature request related to a problem? Please describe.

apachesparkreceiver should not warn on SKIPPED state.
This is a valid state in Spark.

warn    apachesparkreceiver@v0.123.0/scraper.go:266     Unsupported Spark stage status supplied: ignoring this stage's metrics and continuing to metrics for next stage     {"status": "SKIPPED"}

https://stackoverflow.com/questions/34580662/what-does-stage-skipped-mean-in-apache-spark-web-ui

Describe the solution you'd like

No warning.

Describe alternatives you've considered

No response

Additional context

No response

[petern48]

/label receiver/apachesparkreceiver

[github-actions]

Pinging code owners for receiver/apachespark: @Caleb-Hurshman @mrsillydog. See Adding Labels via Comments if you do not have permissions to add labels yourself. For example, comment '/label priority:p2 -needs-triaged' to set the priority and remove the needs-triaged label.