iotests: Add test of recent fix to 'qemu-img measure'

The new test 190 ensures we don't regress back to an infinite loop when
measuring the size of a 2T+ qcow2 image.  I did not append to test 178,
because that test is also designed to run with format 'raw'; also, this
gives us some coverage of the measure command under the quick group.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/tests/qemu-iotests/190.out b/tests/qemu-iotests/190.out
new file mode 100644
index 0000000..d001942
--- /dev/null
+++ b/tests/qemu-iotests/190.out
@@ -0,0 +1,11 @@
+QA output created by 190
+== Huge file ==
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2199023255552
+required size: 2199023255552
+fully allocated size: 2199023255552
+required size: 335806464
+fully allocated size: 2199359062016
+required size: 18874368
+fully allocated size: 2199042129920
+*** done