qapi: remove '-q' arg to diff when comparing QAPI output

When the qapi schema tests fail they merely print that the expected
output didn't match the actual output. This is largely useless when
trying diagnose what went wrong. Removing the '-q' arg to diff
means that it is still silent on successful tests, but when it
fails we'll see details of the incorrect output.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <20180116134217.8725-7-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

tests/Makefile.include

@@ -917,10 +917,10 @@ $(patsubst %, check-%, $(check-qapi-schema-y)): check-%.json: $(SRC_PATH)/%.json
 		$^ >$*.test.out 2>$*.test.err; \
 		echo $$? >$*.test.exit, \
 		"TEST","$*.out")
-	@diff -q $(SRC_PATH)/$*.out $*.test.out
+	@diff $(SRC_PATH)/$*.out $*.test.out
 	@# Sanitize error messages (make them independent of build directory)
-	@perl -p -e 's|\Q$(SRC_PATH)\E/||g' $*.test.err | diff -q $(SRC_PATH)/$*.err -
-	@diff -q $(SRC_PATH)/$*.exit $*.test.exit
+	@perl -p -e 's|\Q$(SRC_PATH)\E/||g' $*.test.err | diff $(SRC_PATH)/$*.err -
+	@diff $(SRC_PATH)/$*.exit $*.test.exit
 
 .PHONY: check-tests/qapi-schema/doc-good.texi
 check-tests/qapi-schema/doc-good.texi: tests/qapi-schema/doc-good.test.texi