Description of problem:

Operator dependencies should always be satisfied by candidates from a default channel (unless there are no valid candidates in a default channel). If a candidate operator is both in its package's default channel AND in a non-default channel, catalog-operator may generate a subscription that arbitrarily specifies either of the two channels.

Originally reported upstream in https://github.com/operator-framework/operator-lifecycle-manager/issues/2067.

Version-Release number of selected component (if applicable): 4.6+

How reproducible: Not always, but maybe at least 50% of the time. Probably more likely to occur if the candidate appears in more channels.

Steps to Reproduce:

1. Create the following resources:

apiVersion: v1
kind: Namespace
metadata:
  name: test-namespace
---
apiVersion: operators.coreos.com/v1alpha1
kind: CatalogSource
metadata:
  name: ibm-operator-catalog
  namespace: test-namespace
spec:
  image: quay.io/bluddy/foo:defchn-a
  sourceType: grpc
---
apiVersion: operators.coreos.com/v1alpha1
kind: CatalogSource
metadata:
  name: opencloud-operators
  namespace: test-namespace
spec:
  image: quay.io/bluddy/foo:defchn-b
  sourceType: grpc
---
apiVersion: operators.coreos.com/v1
kind: OperatorGroup
metadata:
  name: test-operators
  namespace: test-namespace
spec: {}
---
apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: test-subscription
  namespace: test-namespace
spec:
  name: ibm-automation-core
  channel: v1.0
  source: ibm-operator-catalog
  sourceNamespace: test-namespace

2. Wait for installation to finish, then run "kubectl get -n test-namespace subscription". If you see:

$ kubectl get -n test-namespace subscription
NAME                PACKAGE               SOURCE                 CHANNEL
test-subscription   ibm-automation-core   ibm-operator-catalog   v1.0
ibm-common-service-operator-v3-opencloud-operators-test-namespace   ibm-common-service-operator   opencloud-operators    v3

then run "kubectl delete namespace test-namespace" and go back to step (1).

Actual results:

$ kubectl get -n test-namespace subscription
NAME                PACKAGE               SOURCE                 CHANNEL
test-subscription   ibm-automation-core   ibm-operator-catalog   v1.0
ibm-common-service-operator-beta-opencloud-operators-test-namespace   ibm-common-service-operator   opencloud-operators    beta


Expected results:

$ kubectl get -n test-namespace subscription
NAME                PACKAGE               SOURCE                 CHANNEL
test-subscription   ibm-automation-core   ibm-operator-catalog   v1.0
ibm-common-service-operator-v3-opencloud-operators-test-namespace   ibm-common-service-operator   opencloud-operators    v3