[DM]: Fix for correct schema type for top level netconf XML conf object

generateDS only generates types for xsd:complexType/other types.
root netconf xml node 'config' should be of type 'xsd:complexType' instead of 'xsd:element'

Change-Id: Idc7c7cfb436ebb10bda15564bf265874744179af
Partial-Bug: #1620788

src/schema/device_schema/juniper/juniper_common.xsd

@@ -440,13 +440,11 @@ targetNamespace="http://www.juniper.net/2016/device-config/0">
     </xsd:all>
 </xsd:complexType>
 
-<xsd:element name="config">
-    <xsd:complexType>
-       <xsd:attribute name="xmlns:xc" type="xsd:string" default="urn:ietf:params:xml:ns:netconf:base:1.0"/>
-       <xsd:all>
-          <xsd:element name="configuration" type="Configuration"/>
-       </xsd:all>
-    </xsd:complexType>
-</xsd:element>
+<xsd:complexType name="config">
+    <xsd:attribute name="xmlns:xc" type="xsd:string" default="urn:ietf:params:xml:ns:netconf:base:1.0"/>
+    <xsd:all>
+        <xsd:element name="configuration" type="Configuration"/>
+    </xsd:all>
+</xsd:complexType>
 
 </xsd:schema>