Add Spec for Version7 application_deployed?

Add a spec to test the application_deployed? method for the Version7
class.
Add Version7 application_deployed? Method

Update the Version7 class to include an application_deployed? method.
Add Spec for Instance is_application_deployed?

Update the Instance spec to include tests for the
is_application_deployed? method.
Add is_application_deployed? Method to Instance

Update the Instance class to include an is_application_deployed? method
to return whether an application/version instance is deployed for the
particular server.
Add Version7 application_running? Spec

Update the Version7 spec to include tests for the application_running?
method.
Add application_running? Method for Version7

Update the Version7 class to include an application_running? method.
Add Spec for Instance is_application_running?

Update the Instance spec to include tests for the
is_application_running? method.
Add is_application_running? Method to Instance

Update the Instance class to include an is_application_running? method.