Upgrade maven-enforcer-plugin to 3.0.0-M2

Change-Id: I9d5ce4a5432d5cbea2c915a84044d8ade3a7f48b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

pom.xml

diff --git a/pom.xml b/pom.xml
index a82ba5e..dd787ab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -412,7 +412,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-enforcer-plugin</artifactId>
-        <version>3.0.0-M1</version>
+        <version>3.0.0-M2</version>
         <executions>
           <execution>
             <id>enforce-maven</id>