Resolve "Feature: Add custom PostGIS database timeout for queries"

Closes #7 (closed)

\approve @tara @shinde @laurens

exposureinitializer/exposureinitializer.py

@@ -573,6 +573,7 @@ def command_line_interface():
             "port": postgis_config["Exposure"]["port"],
             "username": postgis_config["Exposure"]["username"],
             "password": postgis_config["Exposure"]["password"],
+            "timeout": postgis_config["Exposure"].get("timeout", None),
         }
         exposure_database_object = PostGISExposure(**exposure_db_config)