pgsql: Add tap tests for the schema publications.

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

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6b0f6f79eef2168ce38a8ee99c3ed76e3df5d7ad

Modified Files
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.../subscription/t/025_rep_changes_for_schema.pl   | 205 +++++++++++++++++++++
1 file changed, 205 insertions(+)