Refactor buck external dependencies

Change-Id: Ia4b99493407eb7d4e893804cba6b944f758f085e
diff --git a/apps/gangliametrics/BUCK b/apps/gangliametrics/BUCK
index 6047cfa..8f9d763 100644
--- a/apps/gangliametrics/BUCK
+++ b/apps/gangliametrics/BUCK
@@ -1,5 +1,6 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
+    '//lib:METRICS',
     '//lib:gmetric4j',
     '//lib:metrics-ganglia',
     '//lib:remotetea-oncrpc',