feat: spec.secrets must be existing secrets

[alex1989hu]

CHANGE DESCRIPTION

Problem:
#1960

Cause:
This is the current logic of the code.

Solution:
Make sure that secrets specified in the manifest are preserved and not overwritten by the operator.

Closes #1960

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

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[alex1989hu]

Before fixing unit test and E2E failures I'd like to discuss the approach. Please see the comment here #1960 (comment)

[hors]

Before fixing unit test and E2E failures I'd like to discuss the approach. Please see the comment here #1960 (comment)

Hi @alex1989hu,
Thanks for your contribution! Due to team vacations, we’re currently experiencing some delays in reviewing PRs. We’ll review your suggestion and provide feedback within a week. Appreciate your patience!

[egegunes]

@gkech could you please check this?

[egegunes]

@gkech please check this when you have the chance

[JNKPercona]

Test Name	Result	Time
arbiter	passed	00:11:38
balancer	passed	00:18:24
cross-site-sharded	passed	00:18:51
custom-replset-name	passed	00:09:59
custom-tls	passed	00:14:52
custom-users-roles	passed	00:10:34
custom-users-roles-sharded	passed	00:11:46
data-at-rest-encryption	passed	00:12:49
data-sharded	passed	00:22:47
demand-backup	passed	00:16:10
demand-backup-eks-credentials-irsa	passed	00:00:08
demand-backup-fs	passed	00:23:07
demand-backup-if-unhealthy	passed	00:10:20
demand-backup-incremental-aws	passed	00:12:09
demand-backup-incremental-azure	passed	00:11:59
demand-backup-incremental-gcp-native	passed	00:11:47
demand-backup-incremental-gcp-s3	passed	00:10:53
demand-backup-incremental-minio	passed	00:25:48
demand-backup-incremental-sharded-aws	passed	00:19:01
demand-backup-incremental-sharded-azure	passed	00:18:10
demand-backup-incremental-sharded-gcp-native	passed	00:17:20
demand-backup-incremental-sharded-gcp-s3	passed	00:17:29
demand-backup-incremental-sharded-minio	passed	00:27:32
demand-backup-physical-parallel	passed	00:08:21
demand-backup-physical-aws	passed	00:12:35
demand-backup-physical-azure	passed	00:11:45
demand-backup-physical-gcp-s3	passed	00:11:54
demand-backup-physical-gcp-native	passed	00:12:28
demand-backup-physical-minio	passed	00:20:32
demand-backup-physical-minio-native	passed	00:26:50
demand-backup-physical-minio-native-tls	passed	00:19:53
demand-backup-physical-sharded-parallel	passed	00:11:29
demand-backup-physical-sharded-aws	passed	00:18:13
demand-backup-physical-sharded-azure	passed	00:17:37
demand-backup-physical-sharded-gcp-native	passed	00:17:46
demand-backup-physical-sharded-minio	passed	00:17:49
demand-backup-physical-sharded-minio-native	passed	00:17:46
demand-backup-sharded	passed	00:26:27
disabled-auth	passed	00:16:52
expose-sharded	passed	00:34:11
finalizer	passed	00:10:11
ignore-labels-annotations	failure	01:30:09
init-deploy	passed	00:13:30
ldap	passed	00:09:11
ldap-tls	passed	00:12:38
limits	failure	01:30:00
liveness	passed	00:09:05
mongod-major-upgrade	passed	00:12:26
mongod-major-upgrade-sharded	passed	00:20:29
monitoring-2-0	passed	00:25:09
monitoring-pmm3	passed	00:27:11
multi-cluster-service	passed	00:14:01
multi-storage	passed	00:18:53
non-voting-and-hidden	passed	00:17:07
one-pod	passed	00:07:38
operator-self-healing-chaos	passed	00:12:54
pitr	passed	00:32:27
pitr-physical	passed	01:01:48
pitr-sharded	passed	00:23:05
pitr-to-new-cluster	passed	00:25:37
pitr-physical-backup-source	passed	00:55:54
preinit-updates	failure	01:30:09
pvc-auto-resize	passed	00:13:37
pvc-resize	passed	00:16:33
recover-no-primary	passed	00:28:10
replset-overrides	passed	00:18:09
replset-remapping	passed	00:17:05
replset-remapping-sharded	passed	00:18:04
rs-shard-migration	passed	00:14:07
scaling	passed	00:11:33
scheduled-backup	passed	00:17:57
security-context	passed	00:07:02
self-healing-chaos	passed	00:15:32
service-per-pod	passed	00:19:32
serviceless-external-nodes	passed	00:07:32
smart-update	passed	00:08:07
split-horizon	passed	00:14:06
stable-resource-version	failure	01:30:07
storage	passed	00:07:34
tls-issue-cert-manager	passed	00:29:47
unsafe-psa	passed	00:07:26
upgrade	passed	00:10:04
upgrade-consistency	passed	00:07:45
upgrade-consistency-sharded-tls	passed	00:57:14
upgrade-sharded	passed	00:19:39
upgrade-partial-backup	passed	00:16:52
users	failure	00:05:21
users-vault	failure	01:30:06
version-service	passed	00:25:04

Summary	Value
Tests Run	89/89
Job Duration	03:57:01
Total Test Time	32:10:25

commit: 0fa7592
image: perconalab/percona-server-mongodb-operator:PR-1961-0fa7592e