GitHub issue: https://github.com/redhat-developer/service-binding-operator/issues/458

Currently, we have a requirement to support the multiple application binding testcase:

• binding application A -> backingService CR Y with SBR CR named as A-Y
• binding application B -> backingService CR Y as well with SBR CR named as B-Y

After the binding operation, I would like to do some further queries to understand how many application is bound to the service.
But when checking the Y's annotation, I only see:

service-binding-operator.apps.openshift.io/binding-name:  B-Y

Also, once I deleted SBR B-Y, there is no annotation at all on the backingService CR Y any more !

I know there may be some discussion to define multiple applications inside a single SBR, but if the end-user intends to define multiple SBRs over the same backingService (as my example above), I think the annotation should reflect a correct information.

So, I hope to need to change this field from json entry to json array as:

service-binding-operator.apps.openshift.io/binding-name:  A-Y,B-Y

or

     service-binding-operator.apps.openshift.io/binding-name: |
      [
       {"binding-name":"sbr1"},
       {"binding-name":"sbr2"},
      ]