Better workaround is to download newer python-apt from here [1] and
install it manually with dpkg. The guest agent seems to work OK with it.
There's much less chance of breaking something else, also newer
python-apt will be picked-up automatically on upgrades.

    Tomas


[1] https://packages.ubuntu.com/yakkety/python-apt



Thank you, this is fix the problem! 


root@vmdczen01:~# dpkg -i python-apt_1.1.0~beta5_amd64.deb
Selecting previously unselected package python-apt.
(Reading database ... 155994 files and directories currently installed.)
Preparing to unpack python-apt_1.1.0~beta5_amd64.deb ...
Unpacking python-apt (1.1.0~beta5) ...
dpkg: dependency problems prevent configuration of python-apt:
 python-apt depends on dirmngr | gnupg (<< 2); however:
  Package dirmngr is not installed.
  Version of gnupg on system is 2.1.15-1ubuntu6.

dpkg: error processing package python-apt (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 python-apt

root@vmdczen01:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  linux-headers-4.4.0-83 linux-headers-4.4.0-83-generic linux-image-4.4.0-83-generic linux-image-extra-4.4.0-83-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  dirmngr
The following NEW packages will be installed:
  dirmngr
0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
1 not fully installed or removed.
Need to get 235 kB of archives.
After this operation, 644 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://it.archive.ubuntu.com/ubuntu xenial/main amd64 dirmngr amd64 2.1.11-6ubuntu2 [235 kB]
Fetched 235 kB in 0s (775 kB/s)
Selecting previously unselected package dirmngr.
(Reading database ... 156021 files and directories currently installed.)
Preparing to unpack .../dirmngr_2.1.11-6ubuntu2_amd64.deb ...
Unpacking dirmngr (2.1.11-6ubuntu2) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up dirmngr (2.1.11-6ubuntu2) ...
Setting up python-apt (1.1.0~beta5) ...

root@vmdczen01:~# apt-get install ovirt-guest-agent
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-headers-4.4.0-83 linux-headers-4.4.0-83-generic linux-image-4.4.0-83-generic linux-image-extra-4.4.0-83-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libnl-route-3-200 python-dbus python-ethtool qemu-guest-agent
Suggested packages:
  python-dbus-doc python-dbus-dbg
Recommended packages:
  python-gi | python-qt4-dbus
The following NEW packages will be installed:
  libnl-route-3-200 ovirt-guest-agent python-dbus python-ethtool qemu-guest-agent
0 upgraded, 5 newly installed, 0 to remove and 2 not upgraded.
Need to get 383 kB of archives.
After this operation, 1,574 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://it.archive.ubuntu.com/ubuntu xenial-updates/main amd64 libnl-route-3-200 amd64 3.2.27-1ubuntu0.16.04.1 [124 kB]
Get:2 http://it.archive.ubuntu.com/ubuntu xenial/main amd64 python-dbus amd64 1.2.0-3 [83.5 kB]
Get:3 http://it.archive.ubuntu.com/ubuntu xenial/universe amd64 python-ethtool amd64 0.11-3 [18.0 kB]
Get:4 http://it.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 qemu-guest-agent amd64 1:2.5+dfsg-5ubuntu10.14 [135 kB]
Get:5 http://it.archive.ubuntu.com/ubuntu xenial/universe amd64 ovirt-guest-agent all 1.0.11.2.dfsg-1 [23.4 kB]
Fetched 383 kB in 0s (993 kB/s)
Selecting previously unselected package libnl-route-3-200:amd64.
(Reading database ... 156038 files and directories currently installed.)
Preparing to unpack .../libnl-route-3-200_3.2.27-1ubuntu0.16.04.1_amd64.deb ...
Unpacking libnl-route-3-200:amd64 (3.2.27-1ubuntu0.16.04.1) ...
Selecting previously unselected package python-dbus.
Preparing to unpack .../python-dbus_1.2.0-3_amd64.deb ...
Unpacking python-dbus (1.2.0-3) ...
Selecting previously unselected package python-ethtool.
Preparing to unpack .../python-ethtool_0.11-3_amd64.deb ...
Unpacking python-ethtool (0.11-3) ...
Selecting previously unselected package qemu-guest-agent.
Preparing to unpack .../qemu-guest-agent_1%3a2.5+dfsg-5ubuntu10.14_amd64.deb ...
Unpacking qemu-guest-agent (1:2.5+dfsg-5ubuntu10.14) ...
Selecting previously unselected package ovirt-guest-agent.
Preparing to unpack .../ovirt-guest-agent_1.0.11.2.dfsg-1_all.deb ...
Unpacking ovirt-guest-agent (1.0.11.2.dfsg-1) ...
Processing triggers for libc-bin (2.23-0ubuntu9) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for systemd (229-4ubuntu19) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for dbus (1.10.6-1ubuntu3.3) ...
Setting up libnl-route-3-200:amd64 (3.2.27-1ubuntu0.16.04.1) ...
Setting up python-dbus (1.2.0-3) ...
Remove stale byte-compiled files...
Setting up python-ethtool (0.11-3) ...
Setting up qemu-guest-agent (1:2.5+dfsg-5ubuntu10.14) ...
Setting up ovirt-guest-agent (1.0.11.2.dfsg-1) ...
Processing triggers for libc-bin (2.23-0ubuntu9) ...
Processing triggers for systemd (229-4ubuntu19) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for dbus (1.10.6-1ubuntu3.3) ...



I'm using the package from official repository so I can confirm this bug (https://bugs.launchpad.net/ubuntu/+source/ovirt-guest-agent/+bug/1609130) and the chown fix


 systemctl status ovirt-guest-agent
● ovirt-guest-agent.service - oVirt Guest Agent
   Loaded: loaded (/lib/systemd/system/ovirt-guest-agent.service; disabled; vendor preset: enabled)
   Active: active (running) since Mon 2017-08-07 17:40:43 CEST; 1min 25s ago
  Process: 3417 ExecStartPre=/bin/chown ovirtagent:ovirtagent /run/ovirt-guest-agent.pid (code=exited, status=0/SUCCESS)
  Process: 3415 ExecStartPre=/bin/touch /run/ovirt-guest-agent.pid (code=exited, status=0/SUCCESS)
  Process: 3412 ExecStartPre=/sbin/modprobe virtio_console (code=exited, status=0/SUCCESS)
 Main PID: 3420 (python)
   CGroup: /system.slice/ovirt-guest-agent.service
           └─3420 /usr/bin/python /usr/share/ovirt-guest-agent/ovirt-guest-agent.py




Thank you again