[AIRFLOW-2476] Allow tabulate up to 0.8.2 (apache#3835)

Author: kaxil

setup.py

@@ -322,7 +322,7 @@ def do_setup():
             'requests>=2.5.1, <3',
             'setproctitle>=1.1.8, <2',
             'sqlalchemy>=1.1.15, <1.2.0',
-            'tabulate>=0.7.5, <0.8.0',
+            'tabulate>=0.7.5, <=0.8.2',
             'tenacity==4.8.0',
             'thrift>=0.9.2',
             'tzlocal>=1.4',