Rename L2 load balancer to port load balancer

CLI commands are also renamed to plbs, plb-add and plb-remove

Change-Id: I4c26b390acc5a961594a1dca92a76bee2148c090
diff --git a/tools/build/bazel/modules.bzl b/tools/build/bazel/modules.bzl
index aa426cf..b74f857 100644
--- a/tools/build/bazel/modules.bzl
+++ b/tools/build/bazel/modules.bzl
@@ -159,7 +159,7 @@
     "//apps/flowanalyzer:onos-apps-flowanalyzer-oar",
     "//apps/intentsync:onos-apps-intentsync-oar",
     "//apps/influxdbmetrics:onos-apps-influxdbmetrics-oar",
-    "//apps/l2lb:onos-apps-l2lb-oar",
+    "//apps/portloadbalancer:onos-apps-portloadbalancer-oar",
     "//apps/metrics:onos-apps-metrics-oar",
     "//apps/mfwd:onos-apps-mfwd-oar",
     "//apps/mlb:onos-apps-mlb-oar",