2022.01.30a1

Pre release to unblock scrapli-netconf/cfg updates

• Removed deprecated comms_ansi argument
• Improved error handling/error message for insufficient permissions when opening ssh config/known hosts file
  (system transport)
• Added support for hashed entries in known hosts file thanks to @kangtastic work in #174
• Improved "in channel" SSH and Telnet authentication handling; better consistency between sync and async, patterns
  are now compiled only if/when needed
• Added option to enable echo in PTYProcess (was originally removed from vendor'd code) -- should only be
  useful/necessary with netconf #165
• Allow users to build their own open_cmd for system transport -- users can override this to do things like
  kubectl exec -it args args args or docker exec -it args args args to connect to containers in k8s/docker #166
• Updated/fixed(?) Juniper shell patterns for "normal" and root shells #170
• Support transport options being passed to asyncssh transport thanks to @cuong-nguyenduy work in #178 and #183