import http.client

conn = http.client.HTTPConnection("localhost:8080")

payload = "<action/>"

headers = {
    'authorization': "Basic YWRtaW5AaW50ZXJuYWw6cGFzc0AxMjM=",
    'content-type': "application/xml",
    'accept': "application/xml",
    'cache-control': "no-cache",
    }

conn.request("POST", "/ovirt-engine/api/clusters/65dec1c0-9c85-11e8-be65-8c1645709524/glustervolumes/ee55f809-ff07-42f4-86f8-10a4eb8930f5/rebalance", payload, headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))