Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to ba88f291de193a74f03e99e4348c37ff9c4ffdfd
  - Ignore reverse-SSHFS mountpoint from file synchronization

    This patch intends to avoid attempts to synchronize files to the VM that
    have been mounted from it.

    Issue-ID: ONAPARC-551
    Change-Id: Ida9b13c5f109d3a05dd35e68f17e7898f23750c5
    Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>

diff --git a/docs/submodules/integration.git b/docs/submodules/integration.git
index 228c62e..ba88f29 160000 (submodule)
--- a/docs/submodules/integration.git
+++ b/docs/submodules/integration.git
@@ -1 +1 @@
-Subproject commit 228c62e51e65cf97e277fc257ea27b07dcf55212
+Subproject commit ba88f291de193a74f03e99e4348c37ff9c4ffdfd