/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/ is in python-os-xenapi 0.3.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/agent.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/bandwidth.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/config_file.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/console.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/dom0_plugin_version.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/dom0_pluginlib.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/glance.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/ipxe.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/kernel.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/migration.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/netwrap.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/partition_utils.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/utils.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/workarounds.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/xenhost.py
/usr/lib/python2.7/dist-packages/os_xenapi/dom0/etc/xapi.d/plugins/xenstore.py