get_tables was failing with python3, because readline() returns bytes, which is always distinct to '', but then it failed with IndexError for empty lines. Also, line[0] was returning 42 instead of '*', so no table would be returned.

I have tested with python2 too, and decode() can be called there, it will return unicode type, and comparing with '' and '*' works

Customer-Found
Prod-Related: CEEMCP-19
Prod-Related: PROD-22620

Change-Id: Ib14838becc409c2f735d93b5fa8a8ead6ea1a5ec