uncommenting snapshot repository url

Signed-off-by: Arun Venmany <arun.kumar.v.n@ibm.com>

Author: venmanyarun

liberty-maven-plugin/pom.xml

@@ -21,7 +21,7 @@
 
     <repositories>
         <!-- Configure Sonatype OSS Maven snapshots repository when using snapshots -->
-        <!-- <repository>
+        <repository>
             <id>central-portal-snapshots</id>
             <name>Central Portal Snapshots</name>
             <url>https://central.sonatype.com/repository/maven-snapshots/</url>
@@ -31,7 +31,7 @@
             <releases>
                 <enabled>false</enabled>
             </releases>
-        </repository> -->
+        </repository>
     </repositories>
 
     <dependencies>