[ITB-1836] Allow the interact step to define requested inputs as required (with forced completion by the user)

Author: costas80

gitb-types-specs/src/main/resources/schema/gitb_tbs.xsd

@@ -160,6 +160,7 @@
 		<xsd:attribute name="multiple" type="xsd:boolean"/>
 		<xsd:attribute name="inputType" type="gitb:InputRequestInputType"/>
 		<xsd:attribute name="mimeType" type="xsd:string"/>
+		<xsd:attribute name="required" type="xsd:boolean" default="false"/>
 	</xsd:complexType>
 	<xsd:complexType name="TestStepStatus">
 		<xsd:sequence>

gitb-types-specs/src/main/resources/schema/gitb_tdl.xsd

@@ -477,6 +477,7 @@
 				<xsd:attribute name="inputType" type="gitb:InputRequestInputType"/>
 				<xsd:attribute name="report" type="xsd:boolean" default="true"/>
 				<xsd:attribute name="fileName" type="gitb:StringOrVariable"/>
+				<xsd:attribute name="required" type="gitb:BooleanOrVariable" default="false"/>
 			</xsd:extension>
 		</xsd:complexContent>
 	</xsd:complexType>