Some network devices may use SSH key exchange algorithms that are no
longer supported by the Ansible control host. This will cause
ssh-keyscan to fail, preventing Kayobe from configuring the devices.
This change makes it possible to work around the issue by setting
switch_skip_keyscan to true for the affected devices. The SSH known
hosts file on the Ansible control host will need to be populated
manually.
Change-Id: I4e3394cff1fd86eb5c1a4be55d6fd7fd080b2944
7e3e6558de