distro: split install_authorized_keys() to add_authorized_keys().
distro: split if statement in install_authorized_keys().
distro: add comments.
distro: replace file check with string check.
distro: add logging message to add_authorized_keys().
Merge branch 'feature-multi-ssh-keys'
hypervisor: change default vdc_addr value from 0.0.0.0 to 127.0.0.1.
Merge branch 'feature-default-vnc-address'
Merge pull request #7 from hansode/master

support multi ssh keys