reproducible: share the same apache settings between debian and debian_live_build artifacts

Signed-off-by: Mattia Rizzolo <mattia@debian.org>

hosts/jenkins/etc/apache2/sites-available/jenkins.debian.net.conf

+# vim: set noexpandtab:
+
 <Macro https-redirect $name>
 	<VirtualHost *:80>
 		ServerName $name
@@ -101,6 +103,17 @@
 	CustomLog ${APACHE_LOG_DIR}/access.log combined
 </Macro>
 
+<Macro r-b-artifacts $base>
+	<Directory /var/lib/jenkins/userContent/reproducible/$base/artifacts>
+		HeaderName .HEADER.html
+		<Limit GET POST HEAD>
+		  Order Allow,Deny
+		  Allow from all
+		  Deny from env=bad_bot
+		</Limit>
+	</Directory>
+</Macro>
+
 Use https-redirect jenkins.debian.net
 Use https-redirect reproducible.debian.net
 Use https-redirect reproducible-builds.org
@@ -198,14 +211,8 @@ Use https-redirect www.diffoscope.org
 
 	Include reproduciblemap.conf
 
-	<Directory /var/lib/jenkins/userContent/reproducible/debian/artifacts>
-		HeaderName .HEADER.html
-		<Limit GET POST HEAD>
-		  Order Allow,Deny
-		  Allow from all
-		  Deny from env=bad_bot
-		</Limit>
-	</Directory>
+	Use r-b-artifacts debian
+	Use r-b-artifacts debian_live_build
 
 	# for watching service logfiles
 	ScriptAlias /cgi-bin /srv/jenkins/bin/cgi-bin