misc._ssh_keyscan(): Drop '-t rsa'
It appears to be unnecessary, and causes Ubuntu 22.04 to respond with
zero keys.
@@ -1127,7 +1127,7 @@ def _ssh_keyscan(hostname):
:param hostname: The hostname
:returns: The host key
"""
- args = ['ssh-keyscan', '-T', '1', '-t', 'rsa', hostname]
+ args = ['ssh-keyscan', '-T', '1', hostname]
p = subprocess.Popen(
args=args,
stdout=subprocess.PIPE,
