revert to enforcer plugin 3.0.0-M1 since M2 has a bug that prevents plugin version resolution in sub modules

Author: ddsharpe

pom.xml

@@ -542,7 +542,7 @@
   <properties>
     <java.version.range>11</java.version.range>
     <maven.version.range>[3.5.2,)</maven.version.range>
-    <maven-enforcer-plugin-version>3.0.0-M2</maven-enforcer-plugin-version>
+    <maven-enforcer-plugin-version>3.0.0-M1</maven-enforcer-plugin-version>
     <maven-clean-plugin-version>3.1.0</maven-clean-plugin-version>
     <maven-compiler-plugin-version>3.8.1</maven-compiler-plugin-version>
     <maven-deploy-plugin-version>3.0.0-M1</maven-deploy-plugin-version>