Add tap tests for the schema publications.
This adds additional tests for commit
5a2832465f ("Allow publishing the
tables of schema.). This allows testing streaming of data in tables that
are published via schema publications.
Author: Vignesh C, Haiying Tang
Reviewed-by: Greg Nancarrow, Hou Zhijie, Amit Kapila
Discussion: https://www.postgresql.org/message-id/CALDaNm0OANxuJ6RXqwZsM1MSY4s19nuH3734j4a72etDwvBETQ%40mail.gmail.com