fn: enable log checks in runner test (#838)

api/server/runner_test.go

@@ -441,14 +441,12 @@ func TestRouteRunnerExecution(t *testing.T) {
 			}
 		}
 
-		/* removes flaky log test awaiting resolution of issue #796
 		if test.expectedLogsSubStr != nil {
 			callID := rec.Header().Get("Fn_call_id")
 			if !checkLogs(t, i, ds, callID, test.expectedLogsSubStr) {
 				isFailure = true
 			}
 		}
-		*/
 	}
 }