postgresql_server / db-koji02: set max_standby_streaming_delay to -1 ( ∞ )

Turns out I had set this on the master (db-koji01) which is ignored.
We need to set it on the standby. With a value of -1, the standby will wait
for conflicting transactions/locks to complete however long it takes.
If this doesn't work to get us a good backup on db-koji02, no harm and we
can try something else.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

roles/postgresql_server/templates/postgresql.conf

@@ -510,8 +510,8 @@ effective_io_concurrency = 1
 wal_level = 'hot_standby'
 max_wal_senders = 10
 wal_keep_segments = 100
-max_standby_streaming_delay = 90s
 {% elif ansible_hostname.startswith("db-koji02") %}
 hot_standby = on
 hot_standby_feedback = on
+max_standby_streaming_delay = -1
 {% endif %}