add launchpad bug reports without comments

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+no batmap on convertion from qcow2 to vhd
+
+we run following version of qemu-img:
+$ qemu-img --version
+qemu-img version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.41), Copyright (c) 2004-2008 Fabrice Bellard
+$
+
+Here is os version:
+$ cat /etc/os-release 
+NAME="Ubuntu"
+VERSION="16.04.6 LTS (Xenial Xerus)"
+ID=ubuntu
+ID_LIKE=debian
+PRETTY_NAME="Ubuntu 16.04.6 LTS"
+VERSION_ID="16.04"
+HOME_URL="http://www.ubuntu.com/"
+SUPPORT_URL="http://help.ubuntu.com/"
+BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
+VERSION_CODENAME=xenial
+UBUNTU_CODENAME=xenial
+$
+
+When we use qemu-img for conversion of qcow2 to vhd newly created file doesnt show batmap summary when we run:
+
+# vhd-util read -p -n centos76.vhd
+VHD Footer Summary:
+-------------------
+Cookie              : conectix
+Features            : (0x00000002) <RESV>
+File format version : Major: 1, Minor: 0
+Data offset         : 512
+Timestamp           : Mon Mar  4 13:21:27 2019
+Creator Application : 'qemu'
+Creator version     : Major: 5, Minor: 3
+Creator OS          : Windows
+Original disk size  : 8192 MB (8590417920 Bytes)
+Current disk size   : 8192 MB (8590417920 Bytes)
+Geometry            : Cyl: 16645, Hds: 16, Sctrs: 63
+                    : = 8192 MB (8590417920 Bytes)
+Disk type           : Dynamic hard disk
+Checksum            : 0xfffff119|0xfffff119 (Good!)
+UUID                : 23772822-a66c-45a2-be37-8474604147c7
+Saved state         : No
+Hidden              : 0
+
+VHD Header Summary:
+-------------------
+Cookie              : cxsparse
+Data offset (unusd) : 18446744073709
+Table offset        : 1536
+Header version      : 0x00010000
+Max BAT size        : 4097
+Block size          : 2097152 (2 MB)
+Parent name         : 
+Parent UUID         : 00000000-0000-0000-0000-000000000000
+Parent timestamp    : Fri Dec 31 19:00:00 1999
+Checksum            : 0xfffff466|0xfffff466 (Good!)
+
+#
+
+I am not so strong in VHD format details and not exactly sure how batmap is needed, but when I do conversion of qcow2 image by using vhd-util at the end I get file with proper batmap summary.
+
+In our environment we use CloudStack and Citrix and we use those converted from qcow2 to vhd images as templates. In general there is no problems, but whenever we create snapshot out of VM created from such template vhd-util read command starts giving us error like below:
+
+#
+-------------------
+Cookie              : conectix
+Features            : (0x00000002) <RESV>
+File format version : Major: 1, Minor: 0
+Data offset         : 512
+Timestamp           : Thu Aug 29 16:04:30 2019
+Creator Application : 'tap'
+Creator version     : Major: 1, Minor: 3
+Creator OS          : Unknown!
+Original disk size  : 8194 MB (8592031744 Bytes)
+Current disk size   : 8194 MB (8592031744 Bytes)
+Geometry            : Cyl: 16648, Hds: 16, Sctrs: 63
+                    : = 8193 MB (8591966208 Bytes)
+Disk type           : Dynamic hard disk
+Checksum            : 0xfffff074|0xfffff074 (Good!)
+UUID                : 2b3cac7d-16e1-4771-b8cd-bb8c7876c761
+Saved state         : No
+Hidden              : 0
+
+VHD Header Summary:
+-------------------
+Cookie              : cxsparse
+Data offset (unusd) : 18446744073709
+Table offset        : 1536
+Header version      : 0x00010000
+Max BAT size        : 4097
+Block size          : 2097152 (2 MB)
+Parent name         : 
+Parent UUID         : 00000000-0000-0000-0000-000000000000
+Parent timestamp    : Sat Jan  1 00:00:00 2000
+Checksum            : 0xfffff466|0xfffff466 (Good!)
+
+failed to get batmap header 
+
+#
+
+With the templates that show correct batmap summary that are created by conversion of qcow2 image by vhd-util convert we don't have such problems.
+
+So I wanted to check with community if not existence of the batmap can cause (be the reason of) this behaviour later on snapshot creation stage? Should we always have batmap summary on output of vhd-util read command?
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