K8SPS-378 set RaftEnabledSingleNode when orchestrator size is configured to one

[gkech]

CHANGE DESCRIPTION

Problem:

When orchestrator is configured to size 1, the operator needs to configure RaftEnabledSingleNode set to true. In order for the changes to take effect, the sts of the orchestrator needs to have the hash of the configmap so that it can restart when changes on that CM are applied by the operator.

Cause:
Short explanation of the root cause of the issue if applicable.

Solution:
Short explanation of the solution we are providing with this PR.

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 PS version?
• Does the change support oldest and newest supported Kubernetes version?

[JNKPercona]

Test name	Status
version-service	passed
async-ignore-annotations	passed
auto-config	passed
config	passed
config-router	passed
demand-backup	passed
async-data-at-rest-encryption	passed
gr-data-at-rest-encryption	passed
gr-demand-backup	passed
gr-demand-backup-haproxy	passed
gr-finalizer	passed
gr-haproxy	passed
gr-ignore-annotations	passed
gr-init-deploy	passed
gr-one-pod	passed
gr-recreate	passed
gr-scaling	passed
gr-scheduled-backup	passed
gr-security-context	passed
gr-self-healing	passed
gr-tls-cert-manager	passed
gr-users	passed
haproxy	passed
init-deploy	passed
limits	passed
monitoring	passed
one-pod	passed
operator-self-healing	passed
recreate	passed
scaling	passed
scheduled-backup	passed
service-per-pod	passed
sidecars	passed
smart-update	passed
storage	passed
telemetry	passed
tls-cert-manager	passed
users	passed
pvc-resize	passed
We run 39 out of 39

commit: fa9862d
image: perconalab/percona-server-mysql-operator:PR-1041-fa9862d8