Bazel support for ONOS applications and OAR files

Change-Id: Ic938dded82a68aa75d5f5df18363f3127a36d1ef
diff --git a/tools/build/bazel/variables.bzl b/tools/build/bazel/variables.bzl
index ee80f7a..a164970 100644
--- a/tools/build/bazel/variables.bzl
+++ b/tools/build/bazel/variables.bzl
@@ -1,2 +1,6 @@
-ONOS_VERSION = "1.14.0-SNAPSHOT"
-ONOS_GROUP_ID = "org.onosproject"
+ONOS_ORIGIN = 'ONOS Community'
+ONOS_GROUP_ID = 'org.onosproject'
+ONOS_VERSION = '1.14.0-SNAPSHOT'
+DEFAULT_APP_CATEGORY = 'Utility'
+ONOS_ARTIFACT_BASE = 'onos-'
+APP_PREFIX = ONOS_GROUP_ID + '.'
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