add sonatype oss parent module

Author: fmbenhassine

pom.xml

@@ -4,6 +4,12 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
+    <parent>
+        <groupId>org.sonatype.oss</groupId>
+        <artifactId>oss-parent</artifactId>
+        <version>7</version>
+    </parent>
+
     <groupId>org.jeasy</groupId>
     <artifactId>easy-flows</artifactId>
     <version>0.1-SNAPSHOT</version>