The addSSHTimeout and disablePseudoTerminalAllocation were added in commits
a5ebe2282a and f3c2c26b10,
and called inside the Dialer function, which means they're called every
time the Dialer is called. Given that the sshFlags slice is not mutated
by the Dialer, we can call these functions once.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 0fd3fb0840)
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>