Update git submodules

* Update plugins/download-commands from branch 'stable-2.15'
  to 29b640b13735447a4407f0d2d35cdfc908fe86f7
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Make .git/hooks directory
    
    Change-Id: I6eb852fe39819d324b768b8c13c026760871263e
    
  - Make .git/hooks directory
    
    Change-Id: I2b13edbc2a57ca0659f93fbdae9e054e4785ae6d
    

plugins/download-commands

diff --git a/plugins/download-commands b/plugins/download-commands
index 6669a16..29b640b 160000
--- a/plugins/download-commands
+++ b/plugins/download-commands
@@ -1 +1 @@
-Subproject commit 6669a16692687aeda81ccc4ab938fca59a5fa14a
+Subproject commit 29b640b13735447a4407f0d2d35cdfc908fe86f7