GEODE-9796: workaround for cgroups issue

gradlew

@@ -92,13 +92,13 @@ 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
+    if [ -f "$JAVA_HOME/jre/sh/java" ] ; then
         # IBM's JDK on AIX uses strange locations for the executables
         JAVACMD="$JAVA_HOME/jre/sh/java"
     else
         JAVACMD="$JAVA_HOME/bin/java"
     fi
-    if [ ! -x "$JAVACMD" ] ; then
+    if [ ! -f "$JAVACMD" ] ; then
         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 
 Please set the JAVA_HOME variable in your environment to match the