Fix muzzle directive

Author: manuel-alvarez-alvarez

dd-java-agent/instrumentation/spring-webmvc-3.1/build.gradle

@@ -34,6 +34,20 @@ muzzle {
     extraDependency "javax.servlet:javax.servlet-api:3.0.1"
     extraDependency "org.springframework:spring-webmvc:3.1.0.RELEASE"
   }
+
+  pass {
+    name = 'spring-mvc-pre-5.3'
+    group = 'org.springframework'
+    module = 'spring-webmvc'
+    versions = "[3.1.0.RELEASE,5.3)"
+    skipVersions += [
+      '1.2.1',
+      '1.2.2',
+      '1.2.3',
+      '1.2.4'] // broken releases... missing dependencies
+    skipVersions += '3.2.1.RELEASE' // missing a required class.  (bad release?)
+    extraDependency "javax.servlet:javax.servlet-api:3.0.1"
+  }
 }
 
 apply from: "$rootDir/gradle/java.gradle"

dd-java-agent/instrumentation/spring-webmvc-3.1/src/main/java/datadog/trace/instrumentation/springweb/AppSecDispatcherServletInstrumentation.java

@@ -41,6 +41,11 @@ public ElementMatcher.Junction<ClassLoader> classLoaderMatcher() {
             "org.springframework.web.servlet.mvc.condition.PathPatternsRequestCondition"));
   }
 
+  @Override
+  public String muzzleDirective() {
+    return "spring-mvc-pre-5.3";
+  }
+
   @Override
   public String[] helperClassNames() {
     return new String[] {packageName + ".RequestMappingInfoIterator"};