pgsql: Add parameter "connstr" to PostgreSQL::Test::Cluster::background

Add parameter "connstr" to PostgreSQL::Test::Cluster::background_psql

Like for Cluster::psql, this can be handy to force the use of a
connection string with some values overriden, like a "host".

Author: Aidar Imamov
Discussion: https://postgr.es/m/ecacb079efc533aed3c234cbcb5b07b6@postgrespro.ru

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/d35e29387870fecfdb52ffd4c93c651f0c7c1b43

Modified Files
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src/test/perl/PostgreSQL/Test/Cluster.pm | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)