tests/qapi-schema: Rename tests from data- to args-

Since every schema entity has 'data', the data- prefix conveys no
information.  These tests actually exercise commands.  Only commands
have arguments, so change the prefix to to args-.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

tests/Makefile

@@ -229,9 +229,9 @@ check-qapi-schema-y := $(addprefix tests/qapi-schema/, \
 	redefined-type.json redefined-command.json redefined-builtin.json \
 	redefined-event.json command-int.json bad-data.json event-max.json \
 	type-bypass.json type-bypass-no-gen.json type-bypass-bad-gen.json \
-	data-array-empty.json data-array-unknown.json data-int.json \
-	data-unknown.json data-member-unknown.json data-member-array.json \
-	data-member-array-bad.json returns-array-bad.json returns-int.json \
+	args-array-empty.json args-array-unknown.json args-int.json \
+	args-unknown.json args-member-unknown.json args-member-array.json \
+	args-member-array-bad.json returns-array-bad.json returns-int.json \
 	returns-unknown.json returns-alternate.json returns-whitelist.json \
 	missing-colon.json missing-comma-list.json missing-comma-object.json \
 	nested-struct-data.json nested-struct-returns.json non-objects.json \

tests/qapi-schema/data-array-empty.err → tests/qapi-schema/args-array-empty.err

-tests/qapi-schema/data-array-empty.json:2: Member 'empty' of 'data' for command 'oops': array type must contain single type name
+tests/qapi-schema/args-array-empty.json:2: Member 'empty' of 'data' for command 'oops': array type must contain single type name

tests/qapi-schema/data-array-unknown.err → tests/qapi-schema/args-array-unknown.err

-tests/qapi-schema/data-array-unknown.json:2: Member 'array' of 'data' for command 'oops' uses unknown type 'array of NoSuchType'
+tests/qapi-schema/args-array-unknown.json:2: Member 'array' of 'data' for command 'oops' uses unknown type 'array of NoSuchType'

tests/qapi-schema/data-int.err → tests/qapi-schema/args-int.err

-tests/qapi-schema/data-int.json:2: 'data' for command 'oops' cannot use built-in type 'int'
+tests/qapi-schema/args-int.json:2: 'data' for command 'oops' cannot use built-in type 'int'

tests/qapi-schema/data-member-array-bad.err → tests/qapi-schema/args-member-array-bad.err

-tests/qapi-schema/data-member-array-bad.json:2: Member 'member' of 'data' for command 'oops': array type must contain single type name
+tests/qapi-schema/args-member-array-bad.json:2: Member 'member' of 'data' for command 'oops': array type must contain single type name