Update git submodules

* Update castellan from branch 'master'
  to 111d7341f3c47ccc2363f8fc1fe966322329dfb4
  - Merge "barbican: Ensure valid URLs"
  - barbican: Ensure valid URLs

    Make sure that options to define endpoint URLs only accept valid URLs.

    Change-Id: I1c01fa8328ce62724c356a3fe0c5b6f6b875dfb7
    Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

diff --git a/castellan b/castellan
index 7b3bae16b72b2d0dc39c550772a4a545db4e3123..111d7341f3c47ccc2363f8fc1fe966322329dfb4 160000 (submodule)
--- a/castellan
+++ b/castellan
@@ -1 +1 @@
-Subproject commit 7b3bae16b72b2d0dc39c550772a4a545db4e3123
+Subproject commit 111d7341f3c47ccc2363f8fc1fe966322329dfb4