Description of problem:

orLabelSelectors as well as labelSelector cannot co-exist, only one of them can be specified in the backup request.

However when use creates the following request:

apiVersion: velero.io/v1
kind: Backup
metadata:
 name: backup11x
 namespace: openshift-adp
spec:
 LabelSelector:
   matchLabels:
     app: velero
     component: server
 orLabelSelectors:
 - matchLabels:
     app: mysql
 - matchLabels:
     testing: fooddd
 hooks: {}
 storageLocation: example-velero-1
 ttl: 720h0m0s

the backup ignores the LabelSelector and go ahead and create a back for an up have one of the lables mentioned in orLabelSelectors

Version-Release number of selected component (if applicable):

Client:
       Version: v1.9.0-OADP
       Git commit: -
Server:
       Version: v1.9.0-OADP

registry.redhat.io/oadp/oadp-rhel8-operator@sha256:6321acebb1419f36d1348924dff74df370b31888a40004a3291119a389b04bb5

 brew.registry.redhat.io/rh-osbs/iib:289368

How reproducible:

always

Steps to Reproduce:

Create an app that have 2 labels:

app: mysql

testing: foo

create a backup with the request above

Actual results:

velero backup logs backup11x -n openshift-adp

time="2022-08-09T11:05:19Z" level=info msg="Backed up 11 items out of an estimated total of 11 (estimate will change throughout the backup)" backup=openshift-adp/backup1

1x logSource="pkg/backup/backup.go:380" name=mysql-persistent namespace= progress= resource=projects.project.openshift.io
time="2022-08-09T11:05:20Z" level=info msg="Backed up a total of 11 items" backup=openshift-adp/backup11x logSource="pkg/backup/backup.go:405" progress=

Expected results: 

error msg: Lableselectoprs and or labelselectors cannot coexsit

reference to documentation:  https://velero.io/docs/v1.9/api-types/backup/

Expected results:

Additional info: