K8SPG-1049: fix restore tolerations

[pooknull]

https://perconadev.atlassian.net/browse/K8SPG-1049

DESCRIPTION

This PR sets the pgbackrest restore job tolerations to .spec.backups.pgbackrest.jobs.tolerations when .spec.backups.pgbackrest.restore.tolerations is not specified.

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	00:16:06
builtin-extensions	passed	00:06:08
cert-manager-tls	passed	00:09:50
custom-envs	passed	00:18:37
custom-tls	passed	00:06:33
database-init-sql	passed	00:02:36
demand-backup	passed	00:23:34
demand-backup-offline-snapshot	passed	00:14:04
dynamic-configuration	passed	00:03:18
finalizers	passed	00:03:27
init-deploy	passed	00:03:04
huge-pages	passed	00:02:58
major-upgrade-14-to-15	passed	00:11:28
major-upgrade-15-to-16	passed	00:10:38
major-upgrade-16-to-17	passed	00:10:38
major-upgrade-17-to-18	passed	00:09:05
ldap	passed	00:03:53
ldap-tls	passed	00:06:07
monitoring	passed	00:07:46
monitoring-pmm3	passed	00:09:16
one-pod	passed	00:06:14
operator-self-healing	passed	00:10:44
pitr	passed	00:11:57
scaling	passed	00:06:55
scheduled-backup	passed	00:26:37
self-healing	passed	00:08:31
sidecars	passed	00:03:14
standby-pgbackrest	passed	00:17:41
standby-streaming	passed	00:13:44
start-from-backup	passed	00:10:58
tablespaces	passed	00:06:39
telemetry-transfer	passed	00:04:59
upgrade-consistency	passed	00:07:20
upgrade-minor	passed	00:06:36
users	passed	00:05:26

Summary	Value
Tests Run	35/35
Job Duration	01:59:00
Total Test Time	05:26:56

commit: 87a2e36
image: perconalab/percona-postgresql-operator:PR-1657-87a2e36f4