Update git submodules

* Update plugins/download-commands from branch 'master'
  to 697ca3783add1c8fa406d60f7821ab6db7c1bfec
  - Merge branch 'stable-2.15'
    
    * stable-2.15:
      Format with google-java-format 1.7
    
    Change-Id: Id8d61153874989dcad7e0b2deeaaf191ff2e183e
    
  - Format with google-java-format 1.7
    
    Change-Id: I4c053b01b8948c15aa2b3feb7790153b3ded9d4e
    
diff --git a/plugins/download-commands b/plugins/download-commands
index 22495f7..697ca37 160000
--- a/plugins/download-commands
+++ b/plugins/download-commands
@@ -1 +1 @@
-Subproject commit 22495f7aaa9f91b55c0482cefe27bb117d1869c9
+Subproject commit 697ca3783add1c8fa406d60f7821ab6db7c1bfec