Remove MaxPermSize usage

Obsolete with Java 8. Permanent generation was removed.

Jenkinsfile

@@ -38,8 +38,8 @@ for(i = 0; i < buildTypes.size(); i++) {
                     timeout(time: 180, unit: 'MINUTES') {
                         // See below for what this method does - we're passing an arbitrary environment
                         // variable to it so that JAVA_OPTS and MAVEN_OPTS are set correctly.
-                        withMavenEnv(["JAVA_OPTS=-Xmx1536m -Xms512m -XX:MaxPermSize=1024m",
-                                    "MAVEN_OPTS=-Xmx1536m -Xms512m -XX:MaxPermSize=1024m"]) {
+                        withMavenEnv(["JAVA_OPTS=-Xmx1536m -Xms512m",
+                                    "MAVEN_OPTS=-Xmx1536m -Xms512m"]) {
                             // Actually run Maven!
                             // The -Dmaven.repo.local=${pwd()}/.repository means that Maven will create a
                             // .repository directory at the root of the build (which it gets from the

core/pom.xml

@@ -771,7 +771,7 @@ THE SOFTWARE.
         <configuration>
           <forkCount>0.5C</forkCount>
           <reuseForks>true</reuseForks>
-          <argLine>-XX:MaxPermSize=128m -noverify</argLine> <!-- some versions of JDK7/8 causes VerifyError during mock tests: http://code.google.com/p/powermock/issues/detail?id=504 -->
+          <argLine>-noverify</argLine> <!-- some versions of JDK7/8 causes VerifyError during mock tests: http://code.google.com/p/powermock/issues/detail?id=504 -->
           <trimStackTrace>false</trimStackTrace> <!-- SUREFIRE-1226 workaround -->
         </configuration>
       </plugin>

core/src/build-script/Cobertura.groovy

@@ -56,7 +56,6 @@ public class Cobertura {
             }
             sysproperty(key:"net.sourceforge.cobertura.datafile",value:ser)
             sysproperty(key:"hudson.ClassicPluginStrategy.useAntClassLoader",value:"true")
-            jvmarg(value:"-XX:MaxPermSize=128m")
         }
     }
 

test/pom.xml

@@ -213,7 +213,7 @@ THE SOFTWARE.
         <artifactId>maven-surefire-plugin</artifactId>
         <!-- version specified in grandparent pom -->
         <configuration>
-          <argLine>${jacocoSurefireArgs} -Dfile.encoding=UTF-8 -Xmx1g -XX:MaxPermSize=128m</argLine>
+          <argLine>${jacocoSurefireArgs} -Dfile.encoding=UTF-8 -Xmx1g</argLine>
           <systemPropertyVariables>
               <!-- use AntClassLoader that supports predictable file handle release -->
               <hudson.ClassicPluginStrategy.useAntClassLoader>true</hudson.ClassicPluginStrategy.useAntClassLoader>