pgAdmin 4 commit: Fixed regression issue in taking backup of the table.

Fixed regression issue in taking backup of the table. Added some more test cases.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=e582ffca38c05eb17e9965c69f0873199d80fe24
Author: Aditya Toshniwal <aditya.toshniwal@enterprisedb.com>

Modified Files
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web/pgadmin/tools/backup/__init__.py               |  6 +--
.../tests/test_backup_create_job_unit_test.py      | 53 +++++++++++++++++++++-
2 files changed, 55 insertions(+), 4 deletions(-)