[releng] Use latest plugin versions and maven-enforcer
diff --git a/org.eclipse.modisco.releng.tycho/.launches/Build Modisco - Versions.launch b/org.eclipse.modisco.releng.tycho/.launches/Build Modisco - Versions.launch
new file mode 100644
index 0000000..0689ddd
--- /dev/null
+++ b/org.eclipse.modisco.releng.tycho/.launches/Build Modisco - Versions.launch
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>

+<launchConfiguration type="org.eclipse.m2e.Maven2LaunchConfigurationType">

+<booleanAttribute key="M2_DEBUG_OUTPUT" value="false"/>

+<stringAttribute key="M2_GOALS" value="versions:display-plugin-updates"/>

+<booleanAttribute key="M2_NON_RECURSIVE" value="false"/>

+<booleanAttribute key="M2_OFFLINE" value="false"/>

+<stringAttribute key="M2_PROFILES" value=""/>

+<listAttribute key="M2_PROPERTIES"/>

+<stringAttribute key="M2_RUNTIME" value="EMBEDDED"/>

+<booleanAttribute key="M2_SKIP_TESTS" value="false"/>

+<intAttribute key="M2_THREADS" value="1"/>

+<booleanAttribute key="M2_UPDATE_SNAPSHOTS" value="false"/>

+<stringAttribute key="M2_USER_SETTINGS" value=""/>

+<booleanAttribute key="M2_WORKSPACE_RESOLUTION" value="false"/>

+<stringAttribute key="bad_container_name" value="\org.eclipse.modisc.releng.tycho"/>

+<stringAttribute key="org.eclipse.debug.core.ATTR_REFRESH_SCOPE" value="${project}"/>

+<stringAttribute key="org.eclipse.debug.ui.ATTR_CONSOLE_ENCODING" value="UTF-8"/>

+<booleanAttribute key="org.eclipse.jdt.launching.ATTR_USE_CLASSPATH_ONLY_JAR" value="false"/>

+<stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>

+<stringAttribute key="org.eclipse.jdt.launching.WORKING_DIRECTORY" value="${workspace_loc:/org.eclipse.modisco.releng.tycho}"/>

+</launchConfiguration>

diff --git a/org.eclipse.modisco.releng.tycho/pom.xml b/org.eclipse.modisco.releng.tycho/pom.xml
index 6897caa..5e6b1d4 100644
--- a/org.eclipse.modisco.releng.tycho/pom.xml
+++ b/org.eclipse.modisco.releng.tycho/pom.xml
@@ -10,9 +10,6 @@
 <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
-  <prerequisites>
-    <maven>3.0</maven>
-  </prerequisites>
   <groupId>org.eclipse.modisco</groupId>
   <artifactId>org.eclipse.modisco.releng.tycho</artifactId>
   <version>1.5.2-SNAPSHOT</version>
@@ -48,25 +45,25 @@
     <os-jvm-flags/>
 
     <!-- plugin versions -->
-    <!-- cd to the releng/org.eclipse.modisco.releng.tycho folder then use use 'mvn versions:display-plugin-updates' to check for the latest -->
+    <!-- use the "Build Modisco - Versions" launch to check for the latest -->
     <eclipse-jarsigner-version>1.1.2</eclipse-jarsigner-version>
-    <exec-maven-version>1.3.1</exec-maven-version>
+    <exec-maven-version>3.0.0</exec-maven-version>
     <findbugs-maven-version>3.0.0</findbugs-maven-version>
-    <jacoco-maven-version>0.7.1.201405082137</jacoco-maven-version>
-    <maven-antrun-version>1.7</maven-antrun-version>
-    <maven-assembly-version>2.4</maven-assembly-version>
-    <maven-checkstyle-version>2.12.1</maven-checkstyle-version>
-    <maven-clean-version>2.5</maven-clean-version>
-    <maven-compiler-version>3.1</maven-compiler-version>
-    <maven-deploy-version>2.8.1</maven-deploy-version>
-    <maven-enforcer-version>3.0.0-M2</maven-enforcer-version>
-    <maven-install-version>2.5.1</maven-install-version>
-    <maven-jar-version>2.5</maven-jar-version>
-    <maven-jxr-version>2.3</maven-jxr-version>
-    <maven-pmd-version>3.1</maven-pmd-version>
-    <maven-resources-version>2.6</maven-resources-version>
-    <maven-site-version>3.4</maven-site-version>
-    <maven-surefire-version>2.17</maven-surefire-version>
+    <jacoco-maven-version>0.8.17</jacoco-maven-version>
+    <maven-antrun-version>3.0.0</maven-antrun-version>
+    <maven-assembly-version>3.3.0</maven-assembly-version>
+    <maven-checkstyle-version>3.1.1</maven-checkstyle-version>
+    <maven-clean-version>3.1.0</maven-clean-version>
+    <maven-compiler-version>3.8.1</maven-compiler-version>
+    <maven-deploy-version>3.0.0-M1</maven-deploy-version>
+    <maven-enforcer-version>3.0.0-M3</maven-enforcer-version>
+    <maven-install-version>3.0.0-M1</maven-install-version>
+    <maven-jar-version>3.2.0</maven-jar-version>
+    <maven-jxr-version>3.0.0</maven-jxr-version>
+    <maven-pmd-version>3.13.0</maven-pmd-version>
+    <maven-resources-version>3.2.0</maven-resources-version>
+    <maven-site-version>3.9.1</maven-site-version>
+    <maven-surefire-version>3.0.0-M5</maven-surefire-version>
     <tycho-version>2.1.0</tycho-version>
     <tycho-extras-version>${tycho-version}</tycho-extras-version>
     
@@ -98,7 +95,7 @@
             <configuration>
               <rules>
                 <requireMavenVersion>
-                  <version>3.0</version>
+                  <version>3.6.3</version>
                 </requireMavenVersion>
                 <!--requireJavaVersion>
                   <version>1.5</version>