add arg `private` to salt.modules.ssh.host_keys() so it is possible to skip private keys upon ssh.host_keys execution, fixes #20711
add arg `private` to salt.modules.ssh.host_keys() so it is possible to skip private keys upon ssh.host_keys execution, fixes #20711

fixing pep8 warnings

document usage example of salt.modules.ssh.host_keys()

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt