In Kilo, cinder.api.middleware.sizelimit was replaced by a
compatabilityshim calling in to oslo_middleware.sizelimit and a
deprecation log message was added to indicate the change to
use oslo_middleware [1]. However, the wsgi api-paste.ini file
still uses cinder.api.middleware.sizelimit.
This commit modifies api-paste.ini to use oslo_middlware.sizelimit
directly, thereby allowing removal of the compatabilty shim in
the next release.
[1] Ia99ab479cb8ef63a0db1a1208cc2501abba6132c
Change-Id: Ic0e2c401b0facdd9abe954b0531d970abf4bca22
ed4bcc0be5