iotests: Fix 051 for compat=0.10

051 has both compat=1.1 and compat=0.10 tests (once it uses
lazy_refcounts, once it tests that setting them does not work).
For the compat=0.10 tests, it already explicitly creates a suitable
image.  So let's just ignore the user-specified compat level for the
lazy_refcounts test and explicitly create a compat=1.1 image there, too.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-12-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

tests/qemu-iotests/051

@@ -131,6 +131,8 @@ echo
 echo === Enable and disable lazy refcounting on the command line, plus some invalid values ===
 echo
 
+_make_test_img -o compat=1.1 "$size"
+
 run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=on
 run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=off
 run_qemu -drive file="$TEST_IMG",format=qcow2,lazy-refcounts=

tests/qemu-iotests/051.out

@@ -77,6 +77,7 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.f
 
 === Enable and disable lazy refcounting on the command line, plus some invalid values ===
 
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) quit

tests/qemu-iotests/051.pc.out

@@ -77,6 +77,7 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.f
 
 === Enable and disable lazy refcounting on the command line, plus some invalid values ===
 
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) quit