added support for openstack
added support for openstack
Merge branch 'master' of https://github.com/guy-mograbi-at-gigaspaces/vagrant-automation-machines

# Please enter a commit message to explain why this merge is necessary,
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Merge branch 'master' of https://github.com/guy-mograbi-at-gigaspaces/vagrant-automation-machines

Conflicts:
	aws/Vagrantfile
added openstack support