AppDynamics 3.9.+

This change updates the dependency version of AppDynamics to 3.9.+.

[#78993216]

Author: nebhale

config/app_dynamics_agent.yml

@@ -15,6 +15,6 @@
 
 # Configuration for the New Relic framework
 ---
-version: 3.8.+
+version: 3.9.+
 repository_root: "{default.repository.root}/app-dynamics"
 default_tier_name: CloudFoundry