Use 1.0-rc4 CORD apps until release version is out

Change-Id: I04e3d4323d231db5403c03d6c1060e640203156e
diff --git a/roles/onos-load-apps/defaults/main.yml b/roles/onos-load-apps/defaults/main.yml
index 2dd2a2e..c6e733a 100644
--- a/roles/onos-load-apps/defaults/main.yml
+++ b/roles/onos-load-apps/defaults/main.yml
@@ -12,5 +12,5 @@
     onos_name: org.opencord.vtn
 
 cord_apps_repo_url: "https://oss.sonatype.org/content/repositories/public"
-cord_apps_version: "latest"
+cord_apps_version: "1.0-rc4"