fix bug with multidimentional numpy array and wait threads function

tests/manual/python_tests/producer_wait_bug_mongo/start_services.sh

+#!/usr/bin/env bash
+
+nomad run authorizer.nmd
+nomad run discovery.nmd
+nomad run nginx.nmd
+nomad run receiver.nmd

tests/manual/python_tests/producer_wait_bug_mongo/stop_services.sh

+#!/usr/bin/env bash
+
+nomad stop authorizer
+nomad stop discovery
+nomad stop nginx
+nomad run nginx_kill.nmd  && nomad stop -yes -purge nginx_kill
+nomad stop receiver

tests/manual/python_tests/producer_wait_bug_mongo/test.py

+from __future__ import print_function
+
+import asapo_producer
+import sys
+import time
+import numpy as np
+import threading
+lock = threading.Lock()
+
+
+endpoint = "127.0.0.1:8400"
+beamtime = "asapo_test1"
+stream = "detector"
+token = ""
+nthreads = 8
+
+def callback(header,err):
+    lock.acquire() # to print
+    if err is not None:
+        print("could not sent: ",header,err)
+    else:
+        print ("successfuly sent: ",header)
+    lock.release()
+
+def assert_err(err):
+    if err is not None:
+        print(err)
+        sys.exit(1)
+
+producer = asapo_producer.create_producer(endpoint,beamtime, stream, token, nthreads)
+
+producer.set_log_level("debug")
+
+#send single file
+producer.send_file(1, local_path = "./file1", exposed_path = stream+"/"+"file1", user_meta = '{"test_key":"test_val"}', callback = callback)
+
+
+#send subsets
+producer.send_file(2, local_path = "./file1", exposed_path = stream+"/"+"file2",subset=(2,2),user_meta = '{"test_key":"test_val"}', callback = callback)
+producer.send_file(3, local_path = "./file1", exposed_path = stream+"/"+"file3",subset=(2,2),user_meta = '{"test_key":"test_val"}', callback = callback)
+
+#send meta only
+producer.send_file(3, local_path = "./not_exist",exposed_path = "./whatever",
+                         ingest_mode = asapo_producer.INGEST_MODE_TRANSFER_METADATA_ONLY, callback = callback)
+
+data = np.arange(10,dtype=np.float64)
+
+#send data from array
+producer.send_data(4, stream+"/"+"file5",data,
+                         ingest_mode = asapo_producer.DEFAULT_INGEST_MODE, callback = callback)
+
+#send data from string
+err = producer.send_data(5, stream+"/"+"file6",b"hello",
+                         ingest_mode = asapo_producer.DEFAULT_INGEST_MODE, callback = callback)
+
+#send metadata only
+producer.send_data(6, stream+"/"+"file7",None,
+                         ingest_mode = asapo_producer.INGEST_MODE_TRANSFER_METADATA_ONLY, callback = callback)
+
+
+x = np.array([[1, 2, 3], [4, 5, 6]], np.float32)
+producer.send_data(4, stream+"/"+"file5",x,
+                         ingest_mode = asapo_producer.DEFAULT_INGEST_MODE, callback = callback)
+
+try:
+	x = x.T
+	producer.send_data(4, stream+"/"+"file5",x,
+                         ingest_mode = asapo_producer.DEFAULT_INGEST_MODE, callback = callback)
+except:
+	pass
+else:
+	print ("should be exception")
+
+
+producer.wait_requests_finished(1000)
+