Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Merge "VNF characterization scale_up test, untested"
  - VNF characterization scale_up test, untested

    The purpose of this test is to increase the amount
    of resources provided to the VNF and monitor the ablilty
    of the VNF to scale

    requires https://gerrit.opnfv.org/gerrit/#/c/37991/

    Change-Id: I4e2384ef120dea2348a623acc1d439696d95e73b
    Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 2550aa2..699155d 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 2550aa20b7216741e605405ea919f18b18097b35
+Subproject commit 699155d9b81ed0f7b3d43eef6dac932bc3de1208