Update git submodules

* Update plugins/download-commands from branch 'master'
  to 39b9d56312d505308f54b810e59ff481b9a380aa
  - Merge branch 'stable-2.15'
    
    * stable-2.15:
      GitDownloadCommand: Use Logger's built-in string formatting
    
    Change-Id: I2d30fac015a43657fd10c91095896390563b40e5
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      GitDownloadCommand: Use Logger's built-in string formatting
    
    Change-Id: I4ae4ba2d1de673419682f9965b2838593c3d9515
    
  - GitDownloadCommand: Use Logger's built-in string formatting
    
    Change-Id: Id08fb3af477607c7a0237672d56fe448bdce3b55
    

* Update plugins/reviewnotes from branch 'master'
  to 8ddb7e2ebda8cb7813ae0f3f0b8602e14915e300
  - Merge branch 'stable-2.15'
    
    * stable-2.15:
      CreateReviewNotes: Use Logger's built-in string formatting
    
    Change-Id: Ib1b4ff88c7cb573a6df6f493e755b14b8393bdd8
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      CreateReviewNotes: Use Logger's built-in string formatting
    
    Change-Id: I2d2dd1d24734cc43997cceb7efd57fc72b415d06
    
  - CreateReviewNotes: Use Logger's built-in string formatting
    
    Change-Id: Iffb19f9a9d370dcc0b476421028ec608d715d0df
    
diff --git a/plugins/download-commands b/plugins/download-commands
index 37219fe..39b9d56 160000
--- a/plugins/download-commands
+++ b/plugins/download-commands
@@ -1 +1 @@
-Subproject commit 37219fe3fd59727af1ac7a3b0ee00a6924ff8e00
+Subproject commit 39b9d56312d505308f54b810e59ff481b9a380aa
diff --git a/plugins/reviewnotes b/plugins/reviewnotes
index 4672856..8ddb7e2 160000
--- a/plugins/reviewnotes
+++ b/plugins/reviewnotes
@@ -1 +1 @@
-Subproject commit 467285664ebf8eb6f1e03ff13ebc706eee6d8662
+Subproject commit 8ddb7e2ebda8cb7813ae0f3f0b8602e14915e300