Rework additional ssh argument handling

Now we have the following ways to set additional arguments:

1. [ssh_connection]ssh_args in ansible.cfg: global setting, prepended to
   every command line for ssh/scp/sftp. Overrides default ControlPersist
   settings.
2. ansible_ssh_common_args inventory variable. Appended to every command
   line for ssh/scp/sftp. Used in addition to ssh_args, if set above, or
   the default settings.
3. ansible_{sftp,scp,ssh}_extra_args inventory variables. Appended to
   every command line for the relevant binary only. Used in addition to
   #1 and #2, if set above, or the default settings.
3. Using the --ssh-common-args or --{sftp,scp,ssh}-extra-args command
   line options (which are overriden by #2 and #3 above).

This preserves backwards compatibility (for ssh_args in ansible.cfg),
but also permits global settings (e.g. ProxyCommand via _common_args) or
ssh-specific options (e.g. -R via ssh_extra_args).

Fixes #12576

docs/man/man1/ansible-playbook.1.asciidoc.in

@@ -151,10 +151,23 @@ run operations with su as this user (default=root)
 
 Run operations with sudo (nopasswd) (deprecated, use become)
 
-*--ssh-extra-args=*''-o ProxyCommand="ssh -W %h:%p ..." ...''::
+*--ssh-common-args=*''-o ProxyCommand="ssh -W %h:%p ..." ...''::
 
-Add the specified arguments to any ssh command-line. Useful to set a
-ProxyCommand to use a jump host, but any arguments may be specified.
+Add the specified arguments to any sftp/scp/ssh command-line. Useful to
+set a ProxyCommand to use a jump host, but any arguments that are
+accepted by all three programs may be specified.
+
+*--sftp-extra-args=*''-f ...''::
+
+Add the specified arguments to any sftp command-line.
+
+*--scp-extra-args=*''-l ...''::
+
+Add the specified arguments to any scp command-line.
+
+*--ssh-extra-args=*''-R ...''::
+
+Add the specified arguments to any ssh command-line.
 
 *-U*, 'SUDO_USER', *--sudo-user=*'SUDO_USER'::
 

docs/man/man1/ansible-pull.1.asciidoc.in

@@ -105,10 +105,23 @@ Purge the checkout after the playbook is run.
 
 Sleep for random interval (between 0 and SLEEP number of seconds) before starting.  This is a useful way ot disperse git requests.
 
-*--ssh-extra-args=*''-o ProxyCommand="ssh -W %h:%p ..." ...''::
+*--ssh-common-args=*''-o ProxyCommand="ssh -W %h:%p ..." ...''::
 
-Add the specified arguments to any ssh command-line. Useful to set a
-ProxyCommand to use a jump host, but any arguments may be specified.
+Add the specified arguments to any sftp/scp/ssh command-line. Useful to
+set a ProxyCommand to use a jump host, but any arguments that are
+accepted by all three programs may be specified.
+
+*--sftp-extra-args=*''-f ...''::
+
+Add the specified arguments to any sftp command-line.
+
+*--scp-extra-args=*''-l ...''::
+
+Add the specified arguments to any scp command-line.
+
+*--ssh-extra-args=*''-R ...''::
+
+Add the specified arguments to any ssh command-line.
 
 *-t* 'TAGS', *--tags=*'TAGS'::
 

docs/man/man1/ansible.1.asciidoc.in

@@ -143,10 +143,23 @@ Run operations with su as this user (default=root)
 
 Run the command as the user given by -u and sudo to root.
 
-*--ssh-extra-args=*''-o ProxyCommand="ssh -W %h:%p ..." ...''::
+*--ssh-common-args=*''-o ProxyCommand="ssh -W %h:%p ..." ...''::
 
-Add the specified arguments to any ssh command-line. Useful to set a
-ProxyCommand to use a jump host, but any arguments may be specified.
+Add the specified arguments to any sftp/scp/ssh command-line. Useful to
+set a ProxyCommand to use a jump host, but any arguments that are
+accepted by all three programs may be specified.
+
+*--sftp-extra-args=*''-f ...''::
+
+Add the specified arguments to any sftp command-line.
+
+*--scp-extra-args=*''-l ...''::
+
+Add the specified arguments to any scp command-line.
+
+*--ssh-extra-args=*''-R ...''::
+
+Add the specified arguments to any ssh command-line.
 
 *-U* 'SUDO_USERNAME', *--sudo-user=*'SUDO_USERNAME'::