Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Make use of existing cirros image in the Functest container

    Once [1] is merged, the image needed for this test case will be
    available in /home/opnfv/functest/images/
    So, no need to download again.

    [1] https://gerrit.opnfv.org/gerrit/#/c/37393/

    Change-Id: I219fc38cdf5e929ecdba1631d6315f6d076ae5d0
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index e1ad316..30c5870 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit e1ad31691ea4249a7dd33e9280dd6d0df8bc9475
+Subproject commit 30c5870f7cf3157f997b159cf25bb9cbf1117060