Set selinux to permissive in Vagrant

Selinux is preventing to write on mounted volumes. Let's set it to
permissive in Vagrant box provisioning.

Change-Id: If8ea57f242166eb6f4ef618639d4ab672e5098d3
Closes-Bug: #1530766

dev/vagrant/bootstrap.sh

@@ -94,6 +94,10 @@ function configure_operator {
         su - vagrant sh -c "echo BUILDFLAGS=\\\"--build-env=http_proxy=$http_proxy --build-env=https_proxy=$https_proxy\\\" > ~/kolla/.buildconf"
     fi
 
+    # Set selinux to permissive
+    sed -i -r "s,^SELINUX=.+$,SELINUX=permissive," /etc/selinux/config
+    setenforce permissive
+
     cp -r ~vagrant/kolla/etc/kolla/ /etc/kolla
     mkdir -p /usr/share/kolla
     chown -R vagrant: /etc/kolla /usr/share/kolla