Update git submodules

* Update plugins/delete-project from branch 'master'
  to 9eee6bb4de393cf5bf94a2861320f5e1bf618329
  - Merge branch 'stable-2.16'
    
    * stable-2.16:
      Extend ServletModule instead of HttpPluginModule
    
    Change-Id: I64d2cc46ca437f53849e4fd76107516ab4081021
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      Extend ServletModule instead of HttpPluginModule
    
    Change-Id: I9a93e6f3aa37918eb1e45b62c064e169d0c3503e
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Extend ServletModule instead of HttpPluginModule
    
    Change-Id: I740fa5c794dcb74d831a3fae9ef240c191006acd
    
  - Extend ServletModule instead of HttpPluginModule
    
    As described in I3b89150d1.
    
    Change-Id: Ic91ce95719c6bccc73cc29a2139a2274f20d1939
    
diff --git a/plugins/delete-project b/plugins/delete-project
index d689466..9eee6bb 160000
--- a/plugins/delete-project
+++ b/plugins/delete-project
@@ -1 +1 @@
-Subproject commit d689466ad51bf95fc955c4639ce8e12d9b8c14b1
+Subproject commit 9eee6bb4de393cf5bf94a2861320f5e1bf618329