Add MySQL DB creation example
Add MySQL DB creation example

Change-Id: Ie4733a23786d9797be2edd9ca3bad9ab032b5413
Signed-off-by: Thanh Ha <09ea4d3a79c8bee41a16519f6a431f6bc0fd8d6f@linuxfoundation.org>

Tesora/tesora-nodepool,Tesora/tesora-nodepool,citrix-openstack/nodepool,citrix-openstack/nodepool,seandst/nodepool,seandst/nodepool