Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Update Barometer's collectd plugin to Pike"
  - Update Barometer's collectd plugin to Pike

    Updates collectd-ceilometer-plugin code
    from stable/ocata to stable/pike.

    Change-Id: Idf62f870f2276c8b83249e01d6ed5714a08caa90
    Signed-off-by: ramamani yeleswarapu <ramamani.yeleswarapu@intel.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 29a82d8..c697e9f 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 29a82d8191019d9e2337a2704145b868af0abf93
+Subproject commit c697e9fa334ee4c6c94516ea85bce37da31e9abf