* known_hosts: clarify key format in documentation
Add a small clarification to the documentation about the format of the
"key" parameter.
Should make #664 less of a issue for newcomers.
* known_hosts: normalize key entry to simplify input
Keys are normalized before comparing input with present keys. This
should make it easier to deal with some corner cases, such as having a
hashed entry for some host and trying to add it as non-hashed.
* known_hosts: allow multiple entries per host
In order to support multiple key types and allow the installed ssh
version to decide which is more secure, the module now only overwrites
an existing entry in known_hosts if the provided key is of the same
type.
Old keys of different types must be explicitly removed. Setting
state to "absent" and providing no key will remove all entries for the
host.
d54905ecee