Update git submodules

* Update docs/submodules/snaps from branch 'stable/fraser'
  - Enable get_project_by_id when only tenant_id is provided

    This is to improve:
    https://gerrit.opnfv.org/gerrit/#/c/52675/

    Change-Id: I7228e5eadcc121fe94a869c6cbbeac412d972868
    Signed-off-by: Linda Wang <wangwulin@huawei.com>
    (cherry picked from commit 390d31e3a6eaa0968474d19d71ec804d0c6c071a)

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index a5880f7..1fc5ef2 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit a5880f7bf9d177510c5781b5ce600ea8c565ad43
+Subproject commit 1fc5ef2345f9eab0236a251025aab8708b465b33