"pisi-cli lu" ignores --ignore-build-no

Fixed by Güngör Erseymen.

BUG:FIXED:6826

pisi/api.py

@@ -131,8 +131,9 @@ def list_upgradable():
     Return a list of packages that are upgraded in the repository -> list_of_strings
     """
     installdb = pisi.db.installdb.InstallDB()
-
-    upgradable = filter(pisi.operations.upgrade.is_upgradable, installdb.list_installed())
+    is_upgradable = lambda pkg: pisi.operations.upgrade.is_upgradable(pkg, ctx.get_option('ignore_build_no'))
+    
+    upgradable = filter(is_upgradable, installdb.list_installed())
     # replaced packages can not pass is_upgradable test, so we add them manually
     upgradable.extend(list_replaces())
     return upgradable