feat(suggestion): Support advisor algorithms (kubeflow#4)

Signed-off-by: Ce Gao <gaoce@caicloud.io>

cmd/suggestion/v1alpha3/advisor/unified.py

@@ -0,0 +1,28 @@
+import grpc
+from concurrent import futures
+
+import time
+
+from pkg.api.suggestion.v1alpha3.python import advisor_pb2_grpc
+from pkg.suggestion.v1alpha3.advisor.advisor import AdvisorUnifiedService
+from pkg.suggestion.v1alpha1.types import DEFAULT_PORT
+
+_ONE_DAY_IN_SECONDS = 60 * 60 * 24
+
+
+def serve():
+    server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
+    advisor_pb2_grpc.add_AdvisorSuggestionServicer_to_server(
+        AdvisorUnifiedService(), server)
+    server.add_insecure_port(DEFAULT_PORT)
+    print("Listening...")
+    server.start()
+    try:
+        while True:
+            time.sleep(_ONE_DAY_IN_SECONDS)
+    except KeyboardInterrupt:
+        server.stop(0)
+
+
+if __name__ == "__main__":
+    serve()