test: Run testautomation under Autotools too, not just CMake

The CMake build system runs this since #8313, so we already have to make
sure it doesn't regress.

Signed-off-by: Simon McVittie <smcv@collabora.com>

test/Makefile.in

@@ -389,6 +389,7 @@ distclean: clean
 TESTS = \
 	testatomic$(EXE) \
 	testaudioinfo$(EXE) \
+	testautomation$(EXE) \
 	testbounds$(EXE) \
 	testdisplayinfo$(EXE) \
 	testerror$(EXE) \