Updated openapi.yaml to match to changes in get data node API

  1. updated the pom version to 3.0.0-SNAPSHOT
  2. modified the examples for get data node api to match the post api.

Issue-ID: CPS-865
Signed-off-by: puthuparambil.aditya <aditya.puthuparambil@bell.ca>
Change-Id: Icf03522e9ba7fb9c245fd9f09b3eb8bb6f3ee60d
diff --git a/cps-parent/pom.xml b/cps-parent/pom.xml
index 2e0528e..434464a 100755
--- a/cps-parent/pom.xml
+++ b/cps-parent/pom.xml
@@ -32,7 +32,7 @@
 
     <groupId>org.onap.cps</groupId>
     <artifactId>cps-parent</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>3.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <properties>