K8SPXC-1701: add pxc config for restore job

[eminaktas]

CHANGE DESCRIPTION

Problem:

When restore job triggers job to prepare the cluster, mysql configs are not included for the job.

Cause:

Since running the pod in root user is not allowed without this configuration, the restore jobs fails to run.

[mysqld]
user = root

Solution:

Attaching the pxc configuration to the job resolves the issue.

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?
• Are OpenShift compare files changed for E2E tests (compare/*-oc.yml)?

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

[egegunes]

@eminaktas thank you for contribution, we'll include this in next release.

[egegunes]

@eminaktas one-pod-5-7 test fails because of these changes. please update e2e-tests/one-pod/conf/one-pod.yml and add server_id to configuration section:

diff --git a/e2e-tests/one-pod/conf/one-pod.yml b/e2e-tests/one-pod/conf/one-pod.yml
index 7a39e7eac..0daa78708 100644
--- a/e2e-tests/one-pod/conf/one-pod.yml
+++ b/e2e-tests/one-pod/conf/one-pod.yml
@@ -16,6 +16,7 @@ spec:
       gtid_mode=on
       enforce_gtid_consistency=on

+      server_id=1
       log-bin=binlog
       log-slave-updates

[JNKPercona]

Test Name	Result	Time
affinity-8-0	passed	00:00:00
auto-tuning-8-0	passed	00:00:00
backup-storage-tls-8-0	passed	00:00:00
cross-site-8-0	passed	00:00:00
custom-users-8-0	passed	00:09:11
demand-backup-cloud-8-0	passed	00:00:00
demand-backup-encrypted-with-tls-8-0	passed	00:00:00
demand-backup-8-0	passed	00:00:00
demand-backup-flow-control-8-0	passed	00:00:00
demand-backup-parallel-8-0	passed	00:00:00
demand-backup-without-passwords-8-0	passed	00:00:00
haproxy-5-7	passed	00:00:00
haproxy-8-0	passed	00:00:00
init-deploy-5-7	passed	00:00:00
init-deploy-8-0	passed	00:00:00
limits-8-0	passed	00:00:00
monitoring-2-0-8-0	passed	00:00:00
monitoring-pmm3-8-0	passed	00:00:00
one-pod-5-7	passed	00:00:00
one-pod-8-0	passed	00:00:00
pitr-8-0	passed	00:00:00
pitr-gap-errors-8-0	passed	00:00:00
proxy-protocol-8-0	passed	00:00:00
proxysql-sidecar-res-limits-8-0	passed	00:00:00
pvc-resize-5-7	passed	00:00:00
pvc-resize-8-0	passed	00:00:00
recreate-8-0	passed	00:00:00
restore-to-encrypted-cluster-8-0	passed	00:00:00
scaling-proxysql-8-0	passed	00:00:00
scaling-8-0	passed	00:00:00
scheduled-backup-5-7	passed	00:00:00
scheduled-backup-8-0	passed	00:00:00
security-context-8-0	passed	00:00:00
smart-update1-8-0	passed	00:00:00
smart-update2-8-0	passed	00:00:00
storage-8-0	passed	00:00:00
tls-issue-cert-manager-ref-8-0	passed	00:00:00
tls-issue-cert-manager-8-0	passed	00:00:00
tls-issue-self-8-0	passed	00:00:00
upgrade-consistency-8-0	passed	00:00:00
upgrade-haproxy-5-7	passed	00:00:00
upgrade-haproxy-8-0	passed	00:00:00
upgrade-proxysql-5-7	passed	00:00:00
upgrade-proxysql-8-0	passed	00:00:00
users-5-7	passed	00:00:00
users-8-0	passed	00:00:00
validation-hook-8-0	passed	00:00:00

Summary	Value
Tests Run	47/47
Job Duration	00:37:08
Total Test Time	00:09:11

commit: 3c8510b
image: perconalab/percona-xtradb-cluster-operator:PR-2164-3c8510b4