Add tags checks to i2smo

resources/dtd/ipk-params.xsd

@@ -90,6 +90,13 @@
   <xs:attributeGroup name="attlist.device">
     <xs:attribute name="daemon" use="required"/>
     <xs:attribute name="path"/>
+    <xs:attribute name="tags">
+		<xs:simpleType>
+			<xs:restriction base="xs:string">
+			<xs:pattern value="[\+-][A-Za-z]+(,[\+-][A-Za-z]+)*"/>
+			</xs:restriction>
+		</xs:simpleType>
+	</xs:attribute>
     <xs:attribute name="speed" type="xs:integer"/>
     <xs:attribute name="parcook_device"/>
     <xs:attribute name="sec_period" type="xs:integer"/>
@@ -178,6 +185,13 @@
     </xs:complexType>
   </xs:element>
   <xs:attributeGroup name="attlist.unit">
+    <xs:attribute name="tags">
+		<xs:simpleType>
+			<xs:restriction base="xs:string">
+			<xs:pattern value="[\+-][A-Za-z]+(,[\+-][A-Za-z]+)*"/>
+			</xs:restriction>
+		</xs:simpleType>
+	</xs:attribute>
     <xs:attribute name="id" use="required"/>
     <xs:attribute name="type" use="required" type="xs:integer"/>
     <xs:attribute name="subtype" use="required" type="xs:integer"/>
@@ -274,6 +288,13 @@
         </xs:restriction>
       </xs:simpleType>
     </xs:attribute>
+    <xs:attribute name="tags">
+		<xs:simpleType>
+			<xs:restriction base="xs:string">
+			<xs:pattern value="[\+-][A-Za-z]+(,[\+-][A-Za-z]+)*"/>
+			</xs:restriction>
+		</xs:simpleType>
+	</xs:attribute>
     <xs:attribute name="forbidden"/>
     <xs:attribute name="ip_addr"/>
     <xs:attribute name="data_type">