K8SPG-519 Extensions endpoint

[timorusky]

CHANGE DESCRIPTION

Problem:
When installing custom extensions it is not possible to point to a custom s3 object storage endpoint.

Cause:
The s3 SDK within the extension installer is only minimally configured, currently using default values.

Solution:
Add an optional flag to the extension installer named endpoint and configure the s3 SDK appropriately.

CHECKLIST

Jira

• Is the Jira ticket created and referenced properly?
• Does the Jira ticket have the proper statuses for documentation (Needs Doc) and QA (Needs QA)?
• Does the Jira ticket link to the proper milestone (Fix Version field)?

Tests

• Is an E2E test/test case added for the new feature/change?
• Are unit tests added where appropriate?

Config/Logging/Testability

• Are all needed new/changed options added to default YAML files?
• Are the manifests (crd/bundle) regenerated if needed?
• Did we add proper logging messages for operator actions?
• Did we ensure compatibility with the previous version or cluster upgrade process?
• Does the change support oldest and newest supported PG version?
• Does the change support oldest and newest supported Kubernetes version?

[it-percona-cla]

All committers have signed the CLA.

[JNKPercona]

Test name	Status
custom-extensions	failure
demand-backup	passed
init-deploy	passed
monitoring	passed
operator-self-healing	passed
scaling	passed
scheduled-backup	passed
self-healing	passed
start-from-backup	passed
telemetry-transfer	passed
upgrade-minor	passed
users	passed
We run 12 out of 12

commit: ac94c37
image: perconalab/percona-postgresql-operator:PR-672-ac94c37de

[spron-in]

fixes #670

[egegunes]

@timorusky code LGTM, could you please check the custom-extensions test?

[egegunes]

@timorusky ping

[timorusky]

@egegunes due to the delayed response on my initial request, I've moved on to work with another operator and am no longer interested in pursuing the development of this feature. I am sorry for any inconvenience this may cause.

[egegunes]

@timorusky it's OK, we'll take over from here. thank you for your contribution