Currecting the pattern restriction for IPV4 address in ne-l3vpncomm-type.yang

here space in the pattern makes it different from the expected one
as of now it expect the value in the form of 1.1.1." "1
which makes this invalid.
so removing the extra spaces to receive the proper validated input.

Change-Id: Ic89d7595171aff60c5c4c56d69b1faa94241ded3
diff --git a/models/huawei/src/main/yang/ne-l3vpncomm-type.yang b/models/huawei/src/main/yang/ne-l3vpncomm-type.yang
index 3e4e10c..3bc62f2 100644
--- a/models/huawei/src/main/yang/ne-l3vpncomm-type.yang
+++ b/models/huawei/src/main/yang/ne-l3vpncomm-type.yang
@@ -47,8 +47,7 @@
         typedef ipv4Address {
         type string {
             length "0..255";
-            pattern "((([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}
-            ([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]))";
+            pattern "((([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]))";
         }
     }
 }