MicroShift fails to restart after featureSet: "DevPreviewNoUpgrade" is set.

4.21.0~rc.0

always

    1. Deploy a MicroShift VM
    2. Wait for all pods on running state
    3. Set /etc/microshift/config.yaml:
apiServer:
  featureGates:
    featureSet: "DevPreviewNoUpgrade"
  subjectAltNames:
    - 192.168.122.235
telemetry:
  status: Disabled     
    4. sudo systemctl restart microshift

2 issues:
   - no pods running, command oc get pods -A never output any info, is stuck. MicroShift service looks it's running ok
   - customNoUpgrade field in microshift config must not be set:
     $ sudo microshift show-config -m effective | head -n15
apiServer:
  advertiseAddress: 10.44.0.0
  auditLog:
    maxFileAge: 0
    maxFileSize: 200
    maxFiles: 10
    profile: Default
  featureGates:
    customNoUpgrade:
      disabled: null
      enabled: null
    featureSet: DevPreviewNoUpgrade
  namedCertificates: null
  subjectAltNames:
  - 192.168.122.235

All microshift pods running and this command output:

$ sudo microshift show-config -m effective | head -n15
apiServer:
  advertiseAddress: 10.44.0.0
  auditLog:
    maxFileAge: 0
    maxFileSize: 200
    maxFiles: 10
    profile: Default
  featureGates:
    featureSet: DevPreviewNoUpgrade
  namedCertificates: null
  subjectAltNames:
  - 192.168.122.235