acquire deploy information workflow

The target asks the InstanceActor for deployment information through a GetDeployInfo message.

In case there are currently tasks available (if there are tasks there is also a deploy info) the InstanceActor responds with a DeployInfo message that contains an Object that implements the DeployInfoInterface Java interface. This Object should provide enough information for the target to deploy the right version.

In case there are currently no tasks available the InstanceActor responds with a NoDeployInfo message. Usually the target continues asking for deployment information through periodically sent GetDeployInfo messages until there is a DeloyInfo available.