Update git submodules

* Update docs/submodules/netready from branch 'master'
  - Added details to the installation instructions

    Change-Id: I311e8c7c1d559f6267b194bb55e7fb99c4555635
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/netready b/docs/submodules/netready
index 0c59ca9..1fd3cba 160000 (submodule)
--- a/docs/submodules/netready
+++ b/docs/submodules/netready
@@ -1 +1 @@
-Subproject commit 0c59ca9234d712a74fa01c1eaba676dfb0080052
+Subproject commit 1fd3cba27f960f7ed10968afb437eaa412bda82b