Replace heat client to openstack client

Author: Lukasz Zajaczkowski

docs/getting-started-guides/openstack-heat.md

@@ -18,7 +18,7 @@ If you already have the OpenStack CLI tools installed and configured, you can mo
 #### Install OpenStack CLI tools
 
 ```sh
-sudo pip install -U --force 'python-heatclient==1.1.0'
+sudo pip install -U --force 'python-openstackclient==2.4.0'
 sudo pip install -U --force 'python-swiftclient==3.0.0'
 sudo pip install -U --force 'python-glanceclient==2.0.0'
 sudo pip install -U --force 'python-novaclient==3.4.0'