Update notes for submitted changes

* Move hadoop_fedora/post-install.d/* to .../install.d
Update notes for submitted changes

* Merge first-boot, setup-hadoop and setup-ssh with distro switching based on lsb_release
Update notes for submitted changes

* Make 40-setup-ssh always exit with success
Update notes for submitted changes

* Allow installing augeas and openssh-client on both Fedora and Ubuntu