Description of problem:
Cannot see customer tags in S3 level from AWS console, though they can be seen in infrastructure level:
$ oc get infrastructure.config.openshift.io -o yaml | grep -A7 platformStatus
    platformStatus:
      aws:
        region: us-east-2
        resourceTags:
        - key: costCenter
          value: "7536"
        - key: adminContact
          value: wzheng


Version-Release number of selected component (if applicable):
4.7.0-0.nightly-2021-05-01-081439

How reproducible:
always

Steps to Reproduce:
1.Define userTags in install-config file:
platform:
  aws:
    experimentalPropagateUserTags: yes
    region: us-east-2
    userTags:
      adminContact: wzheng
      costCenter: 7536
2.Launch a cluster with the install-config
3.Check the tags in both infrastructure level and S3 level

Actual results:
No tag in S3 level;

Expected results:
Should have tags in S3 level;

Additional info: