Updated git submodules

Project: appc master 763734c4d961b06b45f0de2d2247bd2c632c3176

Update install-feature for pre-install

Since the feature zip files will be extracted during docker build,
the install-features scripts need to be modified so that the script
will not fail when the zip file does not exist, since the zip file
will have already been unzipped.

Change-Id: I441064226db956addae5c2f238114ce3965c13ef
Signed-off-by: Patrick Brady <patrick.brady@att.com>
Issue-ID: APPC-1337

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index aa8878a..763734c 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit aa8878a2963b963ab9186fe7d8df235e366e41e2
+Subproject commit 763734c4d961b06b45f0de2d2247bd2c632c3176