MigrationItem: canonicalise item names on output

Although multiple formats of item name are accepted (e.g.
$pkg_$suite/$arch and $pkg/$arch_$suite), for compatibility and ease of
parsing by clients the output format is standardised.

Signed-off-by: Adam D. Barratt <adam@adam-barratt.org.uk>

migrationitem.py

@@ -78,14 +78,17 @@ class MigrationItem:
         if self.is_removal:
             self._suite = 'testing'
 	    
-        if self._versionned:
         parts = self._name.split('/', 3)
         if len(parts) == 1 or self._architecture == 'source':
-                self._uvname = parts[0]
+            self._uvname = self._package
         else:
-                self._uvname = "%s/%s" % (parts[0], parts[1])
+            self._uvname = "%s/%s" % (self._package, self._architecture)
+        if self._suite not in ('testing', 'unstable'):
+            self._uvname = '%s_%s' % (self._uvname, self._suite)
+        if self._versionned:
+            self._name = '%s/%s' % (self._uvname, self._version)
         else:
-            self._uvname = self._name
+            self._name = self._uvname
 
     name = property(_get_name, _set_name)