openstack on centos 7

quickstqrt

1. change selinux to permissive
setenforce 0

2. run
systemctl stop NetworkManager
systemctl disable NetworkManager
systemctl enable network
sudo yum update -y
sudo yum install -y https://rdo.fedorapeople.org/rdo-release.rpm
sudo yum install -y openstack-packstack
packstack --allinone