Bumping up ONOS to 1.8.0

Also change parent pom to onos-dependencies and remove 3rd party dependencies

Change-Id: Ic47fd35947e5c889323acd3df166db9bd8563f51
diff --git a/api/pom.xml b/api/pom.xml
index 372694a..8b61970 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -34,13 +34,13 @@
     <description>OLT application API</description>
 
     <dependencies>
-
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onlab-junit</artifactId>
             <version>${onos.version}</version>
             <scope>test</scope>
         </dependency>
+
         <dependency>
             <groupId>org.onosproject</groupId>
             <artifactId>onos-core-serializers</artifactId>