Update git submodules

* Update plugins/plugin-manager from branch 'master'
  to ea992c3b37eed5493c7031ee20faba9dd875170f
  - plugin-manager: Migrate to commons lang v3
    
    Change-Id: Iaac633a5e8156ebe4ecdbee875f777e64ec00b8b
    
diff --git a/plugins/plugin-manager b/plugins/plugin-manager
index 5b87f63..ea992c3 160000
--- a/plugins/plugin-manager
+++ b/plugins/plugin-manager
@@ -1 +1 @@
-Subproject commit 5b87f63f3e9c5817bcddf008c0b4005494059368
+Subproject commit ea992c3b37eed5493c7031ee20faba9dd875170f