Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - test_delete_all_calls_delete: fix delete mock
    
    we need to mock HeatStack.delete() before
    we instantiate otherwise we can't
    reach the instantiated objects delete() method
    
    we need to patch the class so we patch all instances
    
    Change-Id: I36f9476dcfb83e2d583c5a9f72dc27fce57258eb
    Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
-Subproject ab820837ee980bbd356158ccfc343dee3053409
+Subproject 4b02f667538f69d4bd76153291cd0b3b86d09cc