try to fix concurrent issues in excelant

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1892478 13f79535-47bb-0310-9956-ffa450edef68

build.gradle

@@ -235,7 +235,6 @@ subprojects {
             '-Djavax.xml.stream.XMLInputFactory=com.sun.xml.internal.stream.XMLInputFactoryImpl',
             "-Dversion.id=${project.version}",
             '-ea',
-            '-Djunit.jupiter.execution.parallel.enabled=true',
             '-Djunit.jupiter.execution.parallel.config.strategy=fixed',
             '-Djunit.jupiter.execution.parallel.config.fixed.parallelism=3'
             // -Xjit:verbose={compileStart|compileEnd},vlog=build/jit.log${no.jit.sherlock}   ... if ${isIBMVM}
@@ -252,8 +251,6 @@ subprojects {
         // this is necessary for JDK 9+ to keep formatting dates the same way as in previous JDK-versions
         systemProperties['java.locale.providers'] = 'JRE,CLDR'
 
-        systemProperties['junit.jupiter.execution.parallel.enabled'] = 'false'
-
         doFirst {
             if (JavaVersion.current() != JavaVersion.VERSION_1_8) {
                 jvmArgs += [

poi-integration/build.gradle

@@ -126,6 +126,8 @@ test {
 
     dependsOn { testJar }
 
+    systemProperties['junit.jupiter.execution.parallel.enabled'] = 'true'
+
     doFirst {
         jvmArgs += [
             "-javaagent:${OOXML_LITE_AGENT}=${OOXML_LITE_REPORT}|${OOXML_LITE_INCLUDES}",

poi-ooxml/build.gradle

@@ -217,6 +217,8 @@ test {
 
     dependsOn { testJar }
 
+    systemProperties['junit.jupiter.execution.parallel.enabled'] = 'true'
+
     doFirst {
         jvmArgs += [
             "-javaagent:${OOXML_LITE_AGENT}=${OOXML_LITE_REPORT}|${OOXML_LITE_INCLUDES}",

poi-scratchpad/build.gradle

@@ -150,6 +150,8 @@ artifacts {
 test {
     dependsOn { testJar }
 
+    systemProperties['junit.jupiter.execution.parallel.enabled'] = 'true'
+
     doFirst {
         if (JavaVersion.current() != JavaVersion.VERSION_1_8) {
             jvmArgs += [

poi/build.gradle

@@ -154,6 +154,8 @@ artifacts {
 test {
     dependsOn { testJar }
 
+    systemProperties['junit.jupiter.execution.parallel.enabled'] = 'true'
+
     doFirst {
         if (JavaVersion.current() != JavaVersion.VERSION_1_8) {
             jvmArgs << [