TT#20611 Call dh_python2 w/o arguments to use the defaults

This helper does not work properly when we specify a private directory
on the command-line, so we need to run it twice.

Change-Id: I67498cbd6d1db20c95ce7c1dbba989eea2d2c9c2

debian/rules

@@ -41,6 +41,7 @@ override_dh_auto_install:
 		prefix=/usr \
 		cfg_target=/etc/$(APP_NAME)/
 
+	dh_python2
 	dh_python2 /usr/lib/$(APP_NAME)
 
 override_dh_strip: