feat(port-ocean): derive ingestUrl from baseUrl when unset

[haimn-support]

Previously port.ingestUrl defaulted to https://ingest.getport.io and had to be set manually for non-default regions (e.g. US). It now defaults to empty and is derived from port.baseUrl by replacing the api. host prefix with ingest. (https://api.us.getport.io -> https://ingest.us.getport.io), so a single baseUrl change is enough to point a deployment at the right region. An explicit port.ingestUrl still overrides the derivation. Bumps chart to 0.18.0.

Description

What - Add a mechanism to calculate ingestUrl by using the baseUrl
Why - To eliminate the need to add another mandatory param and avoid issues where the baseUrl and ingestUrl mismatch
How - Previously port.ingestUrl defaulted to https://ingest.getport.io and had to be set manually for non-default regions (e.g. US). It now defaults to empty and is derived from port.baseUrl by replacing the api. host prefix with ingest. (https://api.us.getport.io -> https://ingest.us.getport.io), so a single baseUrl change is enough to point a deployment at the right region. An explicit port.ingestUrl still overrides the derivation.

Type of change

Please leave one option from the following and delete the rest:

• Bug fix (non-breaking change which fixes an issue)
• [ X] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Non-breaking change (fix of existing functionality that will not change current behavior)
• Documentation (added/updated documentation)