Update ONOS version to 1.6.0

Change-Id: I53a0723e4da423af8969419c32a4c5de416d563b
diff --git a/apps/aaa b/apps/aaa
index e016b81..687f364 160000
--- a/apps/aaa
+++ b/apps/aaa
@@ -1 +1 @@
-Subproject commit e016b810526f61a06ca928cdc5153d94c6d1c717
+Subproject commit 687f36488d9063494e2c1886d93ca0ff1eafe742
diff --git a/apps/config b/apps/config
index 5b040c7..dd1ebd3 160000
--- a/apps/config
+++ b/apps/config
@@ -1 +1 @@
-Subproject commit 5b040c7c6bc19091900ae0ba2caf5d82e82bdb92
+Subproject commit dd1ebd35de8f3801cb6dfcf2c13d7667248c734b
diff --git a/apps/igmp b/apps/igmp
index b93e73f..2dd83db 160000
--- a/apps/igmp
+++ b/apps/igmp
@@ -1 +1 @@
-Subproject commit b93e73f519a3c46d94f98ea35a375456ab0d3ac3
+Subproject commit 2dd83db7c6b7a653eb9803d8b1c392de7859b5a6
diff --git a/apps/mcast b/apps/mcast
index e82ba5b..5847379 160000
--- a/apps/mcast
+++ b/apps/mcast
@@ -1 +1 @@
-Subproject commit e82ba5b2cc1b2478b86f88e752bb3c37932796bf
+Subproject commit 5847379975f48ca0b400f932b236f2382ee0874b
diff --git a/apps/olt b/apps/olt
index 3396685..af2a56e 160000
--- a/apps/olt
+++ b/apps/olt
@@ -1 +1 @@
-Subproject commit 3396685c2f5e62fceb8a6a3dddf99031388d4e11
+Subproject commit af2a56e9b4f2591928dee6d94f7975b8fdcbacfb
diff --git a/apps/vtn b/apps/vtn
index c71c5ff..646d214 160000
--- a/apps/vtn
+++ b/apps/vtn
@@ -1 +1 @@
-Subproject commit c71c5ffbdabe53f76f86c4197420bd2a0591a72b
+Subproject commit 646d2144c85d7d05a91bcd32e6f95dd23b815515