Merge source and RHEL elements, allowing both source and package based
installations.
Allow amphora agent install from distribution packages (not limited to
RHEL)
Add a new option to diskimage-create.sh script to do so (default is kept
to source installation from Octavia git tree)
For now, amphorae built with distribution packages will have SELinux
(when available) running in permissive mode.
Made the rebind-sshd element generic to streamline the script
Use POSIX syntax for logrotate kill command
Change-Id: I391b2a95d54c7b9fd8f31d3e2c136ff9cc3451f1
d43d3fce86