Fix: request injection could not inject imported bindings

Change-Id: If7c2a638df77d2f43132357f05647ab1183d1683
Reviewed-on: https://pirx.atteo.com/gerrit/506
Reviewed-by: Tomek Piotrowski <tomek.piotrowski@atteo.com>
Tested-by: Tomek Piotrowski <tomek.piotrowski@atteo.com>