[NEOS-1470] Expose ability to configure advanced bastion connection options

[nickzelei]

Would be great to allow users to configure advanced network settings for connecting to their bastion servers such as:

• Timeout
  • The max allowed time to attempt to connection to a bastion host
  • Currently the timeout is set to 30 seconds, which may or may not be enough for some systems
• Max Attempts
  • This is currently hard coded to 1, if we allowed users to increase this, it could decrease flakiness
• Backoff Strategy
  • Useful when Max Attempts is greater than 0. This would allow configuring the amount of time to wait if the service fails to connect to the ssh server
  • Standard here is "exponential" and may also come with various knobs to turn
    • "none" is also a valid strategy, which is currently the default 🙂

_{From SyncLinear.com | NEOS-1470}