DLPX-96879 Disable Influxdb default package

[dbshah12]

Problem

The influxdb2 package ships with a default influxdb.service systemd unit that starts automatically when the package is installed. The performance-diagnostics package (delphix/performance-diagnostics#119) declares influxdb2 as a runtime dependency and provides its own custom service wrapper (delphix-influxdb.service) that handles InfluxDB startup along with one-time initialization (org/bucket/token setup). If the default influxdb.service is not disabled, it will auto-start on install/boot and conflict with the custom service.

Solution

Add influxdb.service to the list of services that are disabled and masked at appliance build time in the appliance-build.virtualization-common Ansible role. This follows the same pattern used for other services (e.g., nginx.service, postgresql.service, telegraf.service) that are installed by packages but managed by Delphix-specific service wrappers.

This ensures that when influxdb2 is installed via the performance-diagnostics package, the default upstream service does not auto-start and the delphix-influxdb.service unit remains the sole entry point for managing InfluxDB on the appliance.

Testing Done

Covered by the ab-pre-push run in the dependent PR: delphix/performance-diagnostics#119.

[VenkatanadhanG]

Do we need to wait for https://github.com/delphix/performance-diagnostics/pull/119/changes before merging this.

Changes looks good.

[ShibasishDelphix]

LGTM, I think we need to merge https://github.com/delphix/performance-diagnostics/pull/119/changes first though.