liberty-on-aro-samples-1.0.12

Release notes:

• Resolve Reza's review comments for basic guide:
  • Use "the Azure AD user" instead of "the administrator" to avoid confusion
  • Switch to project open-liberty-demo when deploying basic sample from OpenShift GUI using the Azure AD user
• Refine guides:
  • replace openliberty with liberty
  • add link of aad-ldap guide
  • locate to section "prepare the liberty application"
• Change JSF view and its backed bean to be stateless for all samples