Arista Driver add log & Modification of some information

Change-Id: I37657bb906ae555ddfb59dd461bb8d659bba8f61
diff --git a/drivers/arista/src/main/resources/arista-drivers.xml b/drivers/arista/src/main/resources/arista-drivers.xml
index 91238a9..9760dbc 100644
--- a/drivers/arista/src/main/resources/arista-drivers.xml
+++ b/drivers/arista/src/main/resources/arista-drivers.xml
@@ -15,7 +15,7 @@
   ~ limitations under the License.
   -->
 <drivers>
-    <driver name="restArista" manufacturer="Arista Networks" hwVersion="1.0.0" swVersion="1.0.0">
+    <driver name="restArista" manufacturer="Arista Networks" hwVersion="DCS.*" swVersion="">
         <behaviour api="org.onosproject.net.device.DeviceDescriptionDiscovery"
                    impl="org.onosproject.drivers.arista.DeviceDescriptionDiscoveryAristaImpl"/>
         <behaviour api="org.onosproject.net.behaviour.ControllerConfig"