OpenSSH's Match declarations are applied first-match-wins. However, we
can't safely define two Matches that might overlap unless we first sort
the keys, as Python (and Jinja) dicts don't guarantee the order of
dict keys,
We also won't scramble the match sequence every time the user adds,
removes or renames a match, and so we give the user clearer, more
concise diffs as when they apply changes.
Finally, we leave a comment on the Match line identifying where the
Match rule came from, to assist in troubleshooting.
Support complex compound matches in Match criteria. For example, be able
to match against multiple Users for a given Match, or be able to match
against address ranges. Or Groups. Or any combination thereof.
Support for matching users can take one of several different appearances
in pillar data:
sshd_config:
matches:
match_1:
type:
User: one_user
options:
ChrootDirectory: /ex/%u
match_2:
type:
User:
- jim
- bob
- sally
options:
ChrootDirectory: /ex/%u
match_3:
type:
User:
jim: ~
bob: ~
sally: ~
options:
ChrootDirectory: /ex/%u
Note the syntax of match_3. By using empty dicts for each user, we can
leverage Salt's pillar mergine. If we use simple lists, we cannot do
this; Salt can't merge simple lists, because it doesn't know what order
they ought to be in.
The fix introduced in 678cc9066c
suppresses the PrintLastLog directive for FreeBSD 10.3.
SSH on FreeBSD 11.0 also does not support PrintLastLog, so this
change suppresses it for any version >= 10.3.
