Simplify the reading configuration

Simplify reading configuration by creating model for config.

Signed-off-by: subhash kumar singh <subh.singh@samsung.com>
Change-Id: I2a4b527c36e83dabafe6f32b3f1f1c100cb24215
diff --git a/config/config.yaml b/config/config.yaml
index de9d2ad..e47eaca 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -12,4 +12,5 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 #
-log-level: debug
\ No newline at end of file
+log-level: debug
+onborder-url: "http://service-ricplt-xapp-onboarder-http.ricplt:8888/api/v1/onboard"
\ No newline at end of file