Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Add basic job for verifying pharos-tools repo

    Change-Id: I5c5ecddc87e99f2b9e27e53381434d9f55d5e639
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4b895cc..c10f77f 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4b895cc5bff1804ecb72171b78fe55cd25fd33a9
+Subproject commit c10f77fd7b09d61e892e50a5f10d5047507efce5