Update plugins-metadata.json with integration-snmp: set skiplist to false

[karenzone]

Adding integration-snmp to plugins-metadata.json so that it will be picked up for the Logstash Reference plugin docgen

Why?

After the VPR job ran and picked up integration-snmp, I kicked off a docgen for Logstash Reference on main. It didn't pick anything up, and I believe that's because we need this piece added to plugins-metadata.json.

Aligning Logstash Reference (LSR) docgen settings

@jsvd, what changes should I make to input-snmp and input-snmp-trap settings in https://github.com/elastic/logstash/blame/main/rakelib/plugins-metadata.json?

At 8.15 I believe that we'll want to set the individual plugins to "skip-list": true. Is the current config acceptable in the interim?

[elastic-sonarqube[bot]]

Quality Gate passed

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[elasticmachine]

:green_heart: Build Succeeded

• Buildkite Build
• Commit: 0b4a6778b7bfcae5cd6309ca56f70ba746449cda

cc @karenzone

[jsvd]

@jsvd, what changes should I make to input-snmp and input-snmp-trap settings in https://github.com/elastic/logstash/blame/main/rakelib/plugins-metadata.json?

Once we flip the integration to become the default, we should make the individual plugins non default and add them to the skip list