e2e: retry when a pod does not have a host assigned (yet)

Errors like "pod nfs-820 does not have a host assigned" seem to get
reported when a Pod is not completely started yet, or was restarted
while trying to access it.

Reported: ceph#4656 (comment)
Signed-off-by: Niels de Vos <ndevos@ibm.com>

e2e/errors.go

@@ -58,6 +58,13 @@ func isRetryableAPIError(err error) bool {
 		return true
 	}
 
+	// "pod nfs-820 does not have a host assigned" seems to get reported
+	// when a Pod is not completely started yet, or was restarted while
+	// trying to access it
+	if strings.Contains(err.Error(), "does not have a host assigned") {
+		return true
+	}
+
 	return false
 }