K8SPG-835: set affinity for patroni-version-check pod

[pooknull]

https://perconadev.atlassian.net/browse/K8SPG-835

DESCRIPTION

This PR sets affinity from .spec.instances[0].affinity to the patroni-version-check pod

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 all needed new/changed options added to the Helm Chart?
• 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?

[JNKPercona]

Test Name	Result	Time
backup-enable-disable	passed	00:07:13
custom-extensions	passed	00:09:33
custom-tls	passed	00:06:02
database-init-sql	passed	00:03:36
demand-backup	passed	00:25:34
finalizers	passed	00:04:00
init-deploy	passed	00:02:59
monitoring	passed	00:07:43
monitoring-pmm3	passed	00:08:39
one-pod	passed	00:05:37
operator-self-healing	passed	00:07:59
pgvector-extension	passed	00:02:46
pitr	passed	00:12:35
scaling	passed	00:05:07
scheduled-backup	passed	00:27:28
self-healing	passed	00:08:26
sidecars	passed	00:02:39
start-from-backup	passed	00:11:23
tablespaces	passed	00:07:45
telemetry-transfer	passed	00:03:39
upgrade-consistency	passed	00:06:49
upgrade-minor	failure	00:03:48
users	passed	00:04:30
We run 23 out of 23		03:06:00

commit: b97b57d
image: perconalab/percona-postgresql-operator:PR-1229-b97b57dd5