Update git submodules

* Update docs/submodules/pharos from branch 'master'
  - Merge "generate_config: Add netmask jinja filter"
  - generate_config: Add netmask jinja filter

    - Add custom filter to convert integer prefix network
      mask to IP format network mask string

    Change-Id: I13d6a2725b93132f858b64d7f93de3a4e0dc5961
    Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>

diff --git a/docs/submodules/pharos b/docs/submodules/pharos
index 4815cca..9e19db6 160000 (submodule)
--- a/docs/submodules/pharos
+++ b/docs/submodules/pharos
@@ -1 +1 @@
-Subproject commit 4815ccae3e8552f698c265a4cb0607f6ca14bdd4
+Subproject commit 9e19db65bb0e9e25b4d059bd58a0ff433badd3bc