Allow 'servet.path' with path pattern parser

Remove the restriction previously prevented `spring.mvc.servlet.path`
from being combined with a `spring.mvc.pathmatch.matching-strategy`
of `PATH_PATTERN_PARSER`. Spring Framework supports this combination
as of v5.3.4.

See gh-24805

Author: philwebb

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcProperties.java

@@ -251,10 +251,6 @@ public void checkConfiguration() {
 				throw new IncompatibleConfigurationException("spring.mvc.pathmatch.matching-strategy",
 						"spring.mvc.pathmatch.use-registered-suffix-pattern");
 			}
-			if (!this.getServlet().getServletMapping().equals("/")) {
-				throw new IncompatibleConfigurationException("spring.mvc.pathmatch.matching-strategy",
-						"spring.mvc.servlet.path");
-			}
 		}
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcPropertiesTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -80,14 +80,6 @@ void incompatiblePathMatchRegisteredSuffixConfig() {
 				.isThrownBy(this.properties::checkConfiguration);
 	}
 
-	@Test
-	void incompatiblePathMatchServletPathConfig() {
-		this.properties.getPathmatch().setMatchingStrategy(WebMvcProperties.MatchingStrategy.PATH_PATTERN_PARSER);
-		this.properties.getServlet().setPath("/test");
-		assertThatExceptionOfType(IncompatibleConfigurationException.class)
-				.isThrownBy(this.properties::checkConfiguration);
-	}
-
 	private void bind(String name, String value) {
 		bind(Collections.singletonMap(name, value));
 	}