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The help document of qemu-img misses some options
Description of problem:
The "--help" option of qemu-img misses the option "skip-broken-bitmaps" for convert , "image-opts" for bench, "object" for dd and "force-share" for measure.
Steps to reproduce:
1. For the option "skip-broken-bitmaps", the following code appears during option parsing for convert and modifies the skip_broken in qemu-img.c:2377-2379.
```
case OPTION_SKIP_BROKEN:
skip_broken = true;
break;
```
2. For the option "image-opts", the following code appears during option parsing for bench and modifies the image_opts in qemu-img.c:4511-4513.
```
case OPTION_IMAGE_OPTS:
image_opts = true;
break;
```
3. For the option "object", the following code appears during option parsing for dd and calls the user_creatable_process_cmdline in qemu-img.c:4980-4982.
```
case OPTION_OBJECT:
user_creatable_process_cmdline(optarg);
break;
```
4. For the option "force-share", the following code appears during option parsing for measure and modifies the force_share in qemu-img.c:5237-5239.
```
case 'U':
force_share = true;
break;
```
Additional information:
But they do not appear in the document provided by "--help".
It may prevent users from using the relevant function.
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