[py3] Revert change from long -> int

Use `long` for py2, and `int` for py3. Otherwise we will get an
integer overflow for py2 32bit.

Author: MrSaints

jaeger_client/thrift.py

@@ -19,6 +19,7 @@
 # THE SOFTWARE.
 
 from past.builtins import basestring
+import six
 import socket
 import struct
 
@@ -34,6 +35,9 @@
 _max_signed_id = (1 << 63) - 1
 _max_unsigned_id = (1 << 64)
 
+if six.PY3:
+    long = int
+
 
 def ipv4_to_int(ipv4):
     if ipv4 == 'localhost':
@@ -118,7 +122,7 @@ def timestamp_micros(ts):
     :param ts:
     :return:
     """
-    return int(ts * 1000000)
+    return long(ts * 1000000)
 
 
 def make_zipkin_spans(spans):