This PR allows securing the console access through CloudStack to the virtual machines running on KVM. The secure access is achieved through the generated certificates for the CA Framework in CloudStack, that provides mutual TLS connections between agents. These certificates are used to also secure the connection between the console proxies and the VNC ports for VM console access.
This feature is only supported on the KVM hypervisor
Design Document: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Secure+KVM+VNC+connection+using+the+CA+framework
This PR creates a new API createConsoleAccess to create VM console URL allowing it to connect using other UI implementations. To avoid reply attacks, the console access is enhanced to use a one time token per session
New configuration added:
consoleproxy.extra.security.validation.enabled: Enable/disable extra security validation for console proxy using a token
Documentation PR: apache/cloudstack-documentation#284
