CLOUDSTACK-6880: rewrite cloudstack-usage installation
CLOUDSTACK-6880: rewrite cloudstack-usage installation

pdion891/cloudstack-docs-install,apache/cloudstack-docs-install,unodba/cloudstack-docs-install,apache/cloudstack-docs-install,unodba/cloudstack-docs-install,pdion891/cloudstack-docs-install,apache/cloudstack-docs-install,unodba/cloudstack-docs-install,pdion891/cloudstack-docs-install