feat(sub): Include IP failure condition message in sub status condition

Currently when an InstallPlan fails, due to bundle unpacking error
is pending due to errors like invalid operatorgroup, or pending bundle unpacking job
the reason is propagated to the Subscription that owns it. The message for the failure is
however missing from the Subscription condition.

eg

```
kind: Subscription
status:
conditions:
    - lastTransitionTime: "2021-07-07T17:55:20Z"
      reason: Installing
      status: "True"
      type: InstallPlanPending
```

This PR propagates the message assosiated with the reason in the InstallPlan
condition when an InstallPlan is either pending, or has failed permanantly.

eg

```
kind: Subscription
status:
conditions:
    - lastTransitionTime: "2021-07-07T17:55:20Z"
      message: no operator group found that is managing this namespace
      reason: Installing
      status: "True"
      type: InstallPlanPending
```

Signed-off-by: Anik Bhattacharjee <anikbhattacharya93@gmail.com>

pkg/controller/operators/catalog/subscription/state.go

@@ -1,6 +1,7 @@
 package subscription
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 
@@ -452,7 +453,7 @@ func (i *installPlanReferencedState) CheckInstallPlanStatus(now *metav1.Time, cl
 		if cond.Reason == "" {
 			cond.Reason = string(phase)
 		}
-
+		cond.Message = extractMessage(status)
 		cond.Type = v1alpha1.SubscriptionInstallPlanPending
 		cond.Status = corev1.ConditionTrue
 		out.Status.SetCondition(cond)
@@ -472,6 +473,7 @@ func (i *installPlanReferencedState) CheckInstallPlanStatus(now *metav1.Time, cl
 		}
 
 		cond.Type = v1alpha1.SubscriptionInstallPlanFailed
+		cond.Message = extractMessage(status)
 		cond.Status = corev1.ConditionTrue
 		out.Status.SetCondition(cond)
 
@@ -508,6 +510,23 @@ func (i *installPlanReferencedState) CheckInstallPlanStatus(now *metav1.Time, cl
 	return known, nil
 }
 
+func extractMessage(status *v1alpha1.InstallPlanStatus) string {
+	if len(status.BundleLookups) > 0 {
+		var b bytes.Buffer
+		for _, lookup := range status.BundleLookups {
+			if cond := lookup.GetCondition(v1alpha1.BundleLookupPending); cond.Status != corev1.ConditionUnknown {
+				b.WriteString(cond.Message)
+				b.WriteString(".")
+			}
+		}
+		return b.String()
+	}
+	if cond := status.GetCondition(v1alpha1.InstallPlanInstalled); cond.Status != corev1.ConditionUnknown {
+		return cond.Message
+	}
+	return ""
+}
+
 type installPlanKnownState struct {
 	InstallPlanReferencedState
 }

pkg/controller/operators/catalog/subscription/state_test.go

@@ -1336,6 +1336,14 @@ func TestCheckInstallPlanStatus(t *testing.T) {
 				now: &now,
 				status: &v1alpha1.InstallPlanStatus{
 					Phase: v1alpha1.InstallPlanPhaseInstalling,
+					Conditions: []v1alpha1.InstallPlanCondition{
+						{
+							Type:    v1alpha1.InstallPlanInstalled,
+							Message: "no operatorgroup found that is managing this namespace",
+							Reason:  v1alpha1.InstallPlanConditionReason("Installing"),
+							Status:  corev1.ConditionFalse,
+						},
+					},
 				},
 			},
 			want: want{
@@ -1346,7 +1354,7 @@ func TestCheckInstallPlanStatus(t *testing.T) {
 					},
 					Status: v1alpha1.SubscriptionStatus{
 						Conditions: []v1alpha1.SubscriptionCondition{
-							planPendingCondition(corev1.ConditionTrue, string(v1alpha1.InstallPlanPhaseInstalling), "", &now),
+							planPendingCondition(corev1.ConditionTrue, string(v1alpha1.InstallPlanPhaseInstalling), "no operatorgroup found that is managing this namespace", &now),
 						},
 						LastUpdated: now,
 					},
@@ -1535,6 +1543,17 @@ func TestCheckInstallPlanStatus(t *testing.T) {
 							Reason: v1alpha1.InstallPlanReasonComponentFailed,
 						},
 					},
+					BundleLookups: []v1alpha1.BundleLookup{
+						{
+							Conditions: []v1alpha1.BundleLookupCondition{
+								{
+									Type:    v1alpha1.BundleLookupPending,
+									Status:  corev1.ConditionTrue,
+									Message: "unpack job not completed: Unpack pod(olm/c5a4) container(pull) is pending. Reason: ImagePullBackOff, Message: Back-off pulling image",
+								},
+							},
+						},
+					},
 				},
 			},
 			want: want{
@@ -1545,7 +1564,7 @@ func TestCheckInstallPlanStatus(t *testing.T) {
 					},
 					Status: v1alpha1.SubscriptionStatus{
 						Conditions: []v1alpha1.SubscriptionCondition{
-							planFailedCondition(corev1.ConditionTrue, string(v1alpha1.InstallPlanReasonComponentFailed), "", &now),
+							planFailedCondition(corev1.ConditionTrue, string(v1alpha1.InstallPlanReasonComponentFailed), "unpack job not completed: Unpack pod(olm/c5a4) container(pull) is pending. Reason: ImagePullBackOff, Message: Back-off pulling image.", &now),
 						},
 						LastUpdated: now,
 					},