Fix iotest 153

Commit f62514b3 made qemu-img reject -o "" but this test uses it.
Since this test only tries to do a dry-run run of qemu-img amend,
replace the -o "" with dummy -o "size=$size".

Fixes: f62514b3

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20200504131959.9533-1-mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

tests/qemu-iotests/153

@@ -122,7 +122,7 @@ for opts1 in "" "read-only=on" "read-only=on,force-share=on"; do
         _run_cmd $QEMU_IMG check       $L "${TEST_IMG}"
         _run_cmd $QEMU_IMG compare     $L "${TEST_IMG}" "${TEST_IMG}"
         _run_cmd $QEMU_IMG map         $L "${TEST_IMG}"
-        _run_cmd $QEMU_IMG amend -o "" $L "${TEST_IMG}"
+        _run_cmd $QEMU_IMG amend -o "size=$size" $L "${TEST_IMG}"
         _run_cmd $QEMU_IMG commit      $L "${TEST_IMG}"
         _run_cmd $QEMU_IMG resize      $L "${TEST_IMG}" $size
         _run_cmd $QEMU_IMG rebase      $L "${TEST_IMG}" -b "${TEST_IMG}.base"

tests/qemu-iotests/153.out

@@ -56,7 +56,7 @@ _qemu_img_wrapper map TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get shared "write" lock
 Is another process using the image [TEST_DIR/t.qcow2]?
 
-_qemu_img_wrapper amend -o  TEST_DIR/t.qcow2
+_qemu_img_wrapper amend -o size=32M TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
 Is another process using the image [TEST_DIR/t.qcow2]?
 
@@ -118,7 +118,7 @@ _qemu_img_wrapper compare -U TEST_DIR/t.qcow2 TEST_DIR/t.qcow2
 
 _qemu_img_wrapper map -U TEST_DIR/t.qcow2
 
-_qemu_img_wrapper amend -o  -U TEST_DIR/t.qcow2
+_qemu_img_wrapper amend -o size=32M -U TEST_DIR/t.qcow2
 qemu-img: unrecognized option '-U'
 Try 'qemu-img --help' for more information
 
@@ -187,7 +187,7 @@ _qemu_img_wrapper compare TEST_DIR/t.qcow2 TEST_DIR/t.qcow2
 
 _qemu_img_wrapper map TEST_DIR/t.qcow2
 
-_qemu_img_wrapper amend -o  TEST_DIR/t.qcow2
+_qemu_img_wrapper amend -o size=32M TEST_DIR/t.qcow2
 qemu-img: Could not open 'TEST_DIR/t.qcow2': Failed to get "write" lock
 Is another process using the image [TEST_DIR/t.qcow2]?
 
@@ -241,7 +241,7 @@ _qemu_img_wrapper compare -U TEST_DIR/t.qcow2 TEST_DIR/t.qcow2
 
 _qemu_img_wrapper map -U TEST_DIR/t.qcow2
 
-_qemu_img_wrapper amend -o  -U TEST_DIR/t.qcow2
+_qemu_img_wrapper amend -o size=32M -U TEST_DIR/t.qcow2
 qemu-img: unrecognized option '-U'
 Try 'qemu-img --help' for more information
 
@@ -303,7 +303,7 @@ _qemu_img_wrapper compare TEST_DIR/t.qcow2 TEST_DIR/t.qcow2
 
 _qemu_img_wrapper map TEST_DIR/t.qcow2
 
-_qemu_img_wrapper amend -o  TEST_DIR/t.qcow2
+_qemu_img_wrapper amend -o size=32M TEST_DIR/t.qcow2
 
 _qemu_img_wrapper commit TEST_DIR/t.qcow2
 
@@ -345,7 +345,7 @@ _qemu_img_wrapper compare -U TEST_DIR/t.qcow2 TEST_DIR/t.qcow2
 
 _qemu_img_wrapper map -U TEST_DIR/t.qcow2
 
-_qemu_img_wrapper amend -o  -U TEST_DIR/t.qcow2
+_qemu_img_wrapper amend -o size=32M -U TEST_DIR/t.qcow2
 qemu-img: unrecognized option '-U'
 Try 'qemu-img --help' for more information