Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Changed credentials for deploying heat templates."
  - Changed credentials for deploying heat templates.

    The old credentials had been working on other pods but are not working
    with our latest deployed by Kolla. This change does not affect any of
    the functionality included in the tests. It simply takes the administrative
    user credentials and changes the project to the newly created one.

    Change-Id: I76c605797b68f902f2ee5c679bd5b8a50c48a501
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index a1007a6..a759ebf 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit a1007a6eb00d32b4fee1f021324f67d6f16b3cd9
+Subproject commit a759ebf00044dd6031fbeed6f7d31099dbdfbba5