Increase integration test timeout

Increase time for CLI integration tests to account for @Grab downloads.

spring-cli/src/test/java/org/springframework/cli/SampleIntegrationTests.java

@@ -73,7 +73,7 @@ public class SampleIntegrationTests {
 						return command;
 					}
 				});
-		this.command = future.get(30, TimeUnit.SECONDS);
+		this.command = future.get(4, TimeUnit.MINUTES);
 	}
 
 	@After