XMPP as SBI support: implementation of core XMPP and Xmpp Device Provider

State machine handled by XmppSession interface, most of tests implemented

XmppDeviceFactory re-designed, tests updated

pom and BUCK files updated

Change-Id: I4c6955e091169c945415084cbb000c61b474c0fc
diff --git a/protocols/xmpp/core/api/BUCK b/protocols/xmpp/core/api/BUCK
new file mode 100644
index 0000000..8d191ee
--- /dev/null
+++ b/protocols/xmpp/core/api/BUCK
@@ -0,0 +1,12 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//core/api:onos-api',
+    '//lib:tinder-xmpp',
+    '//lib:netty-transport',
+    '//lib:netty-common',
+    '//lib:org.apache.servicemix.bundles.dom4j',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+)
\ No newline at end of file