OCPBUGS-33877: bump aws bootstrap destroy timeout

In CI, we are seeing that deleting the SSH rule is frequently hitting
the 5-minute time limit. This increases the time limit to 15 minutes
and adds logging and warning messages for observation.

In testing, most cases of deleting this rule take 10 seconds, but
not infrequently we can see an outlier that takes, say, 8 minutes.

Author: patrickdillon

pkg/infrastructure/aws/clusterapi/aws.go

@@ -233,8 +233,10 @@ func removeSSHRule(ctx context.Context, cl k8sClient.Client, infraID string) err
 	}
 	logrus.Debug("Updated AWSCluster to remove bootstrap SSH rule")
 
-	timeout := 5 * time.Minute
+	timeout := 15 * time.Minute
 	untilTime := time.Now().Add(timeout)
+	warnTime := time.Now().Add(5 * time.Minute)
+	warned := false
 	timezone, _ := untilTime.Zone()
 	logrus.Infof("Waiting up to %v (until %v %s) for bootstrap SSH rule to be destroyed...", timeout, untilTime.Format(time.Kitchen), timezone)
 	if err := wait.ExponentialBackoffWithContext(ctx, wait.Backoff{
@@ -247,12 +249,18 @@ func removeSSHRule(ctx context.Context, cl k8sClient.Client, infraID string) err
 		if err := cl.Get(ctx, key, c); err != nil {
 			return false, err
 		}
+		if time.Now().After(warnTime) && !warned {
+			logrus.Warn("Deleting bootstrap SSH rule is still progressing but taking longer than expected")
+			warned = true
+		}
 		if sg, ok := c.Status.Network.SecurityGroups[capa.SecurityGroupControlPlane]; ok {
 			for _, r := range sg.IngressRules {
 				if r.Description == awsmanifest.BootstrapSSHDescription {
+					logrus.Debugf("Still waiting for bootstrap SSH security rule %s to be deleted from %s...", r.Description, sg.ID)
 					return false, nil
 				}
 			}
+			logrus.Debugf("The bootstrap SSH security rule %s has been removed from %s", awsmanifest.BootstrapSSHDescription, sg.ID)
 			return true, nil
 		}
 		// This shouldn't happen, but if control plane SG is not found, return an error.