Updated git submodules

Project: appc master 78f459993575bcab672898610ec281674ccaebc3

Add Junit test for appc-provider bundle

1. add junite test for appc-provider bundle to increase sonar test converage.
2. move test files of appc-dg-util under java folder.

Issue-Id: APPC-229
Change-Id: I37620a820eb99aecb7fe91974826b4ef2e5d428a
Signed-off-by: Hao Kuang <Hao.Kuang@amdocs.com>
Increase sonar coverage for common

Add Junit test in appc-common
 - cache
   - cache/impl
 - configuration
 - exceptions
 - i18n
 - logging

Issue-Id: APPC-230
Change-Id: I04c457da4dfa881c1109273b8fd3e16e76ebd68f
Signed-off-by: beili.zhou <beili.zhou@amdocs.com>
Fix Blocker/Critical sonar issues

Fix Blocker/Critical sonar issues in appc module
https://sonar.onap.org/component_issues?id=org.openecomp.appc%3Aappc#resolved=false|severities=BLOCKER|fileUuids=AV36PknS89V-MRZU58_f

Fixed issue Close "FileInputStream".

Issue-Id: APPC-186
Change-Id: I2fab5e54735992a4cbf2972628574edd17905fe3
Signed-off-by: shashikanth.vh <shashikanth.vh@huawei.com>
Increased test coverage for appc-java-client

Added Junit test cases  to increase test coverage for appc-java-client

Change-Id: I31154acea348f50da5df47262611bfb108a4ed3a
Issue-ID:APPC-223
Signed-off-by: mojahidi <mojahidul.islam@amdocs.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index f2e77cc..78f4599 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit f2e77cc8209018f6955fba400ab4d0ff609448b1
+Subproject commit 78f459993575bcab672898610ec281674ccaebc3