[BUGFIX] Fix warning about undefined index in Autowiring
The Autowiring annotation did not check the existence the existence of
the value key, leading to a warning, followed by an exception, when
the annotation was used like::
and the ReflectionService was asked for reflection data on such a class.
The same problem could affect Proxy annotation, so it is fixed as well.
Releases: master, 3.0, 2.3, 2.2, 2.1