stasis_endpoints: Add new Status and Headers to ContactStatus

ASTERISK-25903 added a new headers to AMI Event ContactStatusDetail.
ASTERISK-25904 added a new Status to AMI Event ContactStatusDetail.
These additions should be also in stasis_endpoints
to include in command "manager show event ContactStatus"

Change-Id: I7610ad02a998e1f26c20caa27aa50279d0164f6a

main/stasis_endpoints.c

@@ -86,6 +86,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 						<enum name="Reachable"/>
 						<enum name="Created"/>
 						<enum name="Removed"/>
+						<enum name="Updated"/>
 					</enumlist>
 				</parameter>
 				<parameter name="AOR">
@@ -97,6 +98,12 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 				<parameter name="RoundtripUsec">
 					<para>The RTT measured during the last qualify.</para>
 				</parameter>
+				<parameter name="UserAgent">
+					<para>Content of the User-Agent header in REGISTER request</para>
+				</parameter>
+				<parameter name="RegExpire">
+					<para>Absolute time that this contact is no longer valid after</para>
+				</parameter>
 			</syntax>
 		</managerEventInstance>
 	</managerEvent>