Fix incorrect spelling of retrieve from retreive

Corrected the spelling of retrieve, where it was spelled as retreive.

• There were two cases of this mispelling; one upper-case and one lower-case

Change-Id: Ic97fd210d8d3ae7e568e5a2e5d97c6220d2ff628
Signed-off-by: Richard B Winters <rik@mmogp.com>
Reviewed-by: Steven Dake <sdake@redhat.com>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>