Update Gradle wrapper to 6.4 (#55338)

buildSrc/src/main/resources/minimumGradleVersion

@@ -1 +1 @@
-6.3
+6.4

buildSrc/src/test/java/org/elasticsearch/gradle/test/GradleThreadsFilter.java

@@ -24,12 +24,12 @@ import com.carrotsearch.randomizedtesting.ThreadFilter;
 /**
  * Filter out threads controlled by gradle that may be created during unit tests.
  *
- * Currently this is only the pooled threads for Exec.
+ * Currently this includes pooled threads for Exec as well as file system event watcher threads.
  */
 public class GradleThreadsFilter implements ThreadFilter {
 
     @Override
     public boolean reject(Thread t) {
-        return t.getName().startsWith("Exec process");
+        return t.getName().startsWith("Exec process") || t.getName().startsWith("File watcher consumer");
     }
 }

distribution/packages/build.gradle

@@ -52,7 +52,7 @@ import java.util.regex.Pattern
  */
 
 plugins {
-  id "nebula.ospackage-base" version "8.1.0"
+  id "nebula.ospackage-base" version "8.3.0"
 }
 
 void addProcessFilesTask(String type, boolean oss, boolean jdk) {

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.4-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionSha256Sum=0f316a67b971b7b571dac7215dcf2591a30994b3450e0629925ffcfe2c68cc5c
+distributionSha256Sum=d08f7e24d061910382c2fda9915e6ed42dd1480ae2e99211f92c70190cb697e0

gradlew

@@ -82,6 +82,7 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -129,6 +130,7 @@ fi
 if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath