Add surfdrive credential

surf/Issues/surfdrive/description.xml

+<IssueSpecification version="4">
+	<Name>
+		<en>SURFDrive entitlement</en>
+		<nl>SURFDrive entitlement</nl>
+	</Name>
+	<ShortName>
+		<en>SURFDrive entitlement</en>
+		<nl>SURFDrive entitlement</nl>
+	</ShortName>
+	<SchemeManager>pbdf</SchemeManager>
+	<IssuerID>surf</IssuerID>
+	<CredentialID>surfdrive</CredentialID>
+	<Description>
+		<en>Your SURFDrive entitlement, for logging in at SURFDrive</en>
+		<nl>Uw SURFDrive entitlement, waarmee u in kunt loggen op SURFDrive</nl>
+	</Description>
+	<ShouldBeSingleton>false</ShouldBeSingleton>
+
+	<Attributes>
+		<Attribute id="eppn">
+			<Name>
+				<en>EPPN</en>
+				<nl>EPPN</nl>
+			</Name>
+			<Description>
+				<en>Your Educational Person Principal Name</en>
+				<nl>Uw Educational Person Principal Name</nl>
+			</Description>
+		</Attribute>
+		<Attribute id="emailadres">
+			<Name>
+				<en>Email address</en>
+				<nl>E-mailadres</nl>
+			</Name>
+			<Description>
+				<en>Your email address</en>
+				<nl>Uw e-mailadres</nl>
+			</Description>
+		</Attribute>
+		<Attribute id="displayname">
+			<Name>
+				<en>Name</en>
+				<nl>Naam</nl>
+			</Name>
+			<Description>
+				<en>Your name</en>
+				<nl>Uw naam</nl>
+			</Description>
+		</Attribute>
+		<Attribute id="entitlement">
+			<Name>
+				<en>Entitlement</en>
+				<nl>Entitlement</nl>
+			</Name>
+			<Description>
+				<en>Your SURFDrive entitlement</en>
+				<nl>Uw SURFDrive entitlement</nl>
+			</Description>
+		</Attribute>
+	</Attributes>
+</IssueSpecification>