tests: Add data file with QEMU QAPI schema

Add the QAPI schema (returned by 'query-qmp-schema' command) which will
be used for QAPI schema testing in upcoming patches.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>

tests/Makefile.am

@@ -129,6 +129,7 @@ EXTRA_DIST = \
 	qemuxml2argvdata \
 	qemuxml2xmloutdata \
 	qemustatusxml2xmldata \
+	qemuqapischema.json \
 	qemumemlockdata \
 	secretxml2xmlin \
 	securityselinuxhelperdata \