Travis postgres update: removing unnecessary start of mongo-runner (#6594)

* use pg-promise native pg-connection-string to parse uri instead of ParseConfigParser.js. The allows for a more felxible uri for ssl and other params

* Revert "use pg-promise native pg-connection-string to parse uri instead of ParseConfigParser.js. The allows for a more felxible uri for ssl and other params"

This reverts commit a5926d3ff7b97f72bb0c5bced15f34942cd1a96d.

* Updating travis postgres and removing unnecessary start of mongo-runner. Ensuring before_script and before_install matches the rest of travis

scripts/before_install_postgres.sh

@@ -1,9 +1,14 @@
 #!/bin/bash
-  
+
 set -e
+source ~/.nvm/nvm.sh
 
 echo "[SCRIPT] Before Install Script :: Setup Postgres ${POSTGRES_MAJOR_VERSION}"
 
+nvm install $NODE_VERSION
+nvm use $NODE_VERSION
+npm install -g greenkeeper-lockfile@1
+
 if [[ $POSTGRES_MAJOR_VERSION -lt 11 ]]; then
   # Setup postgres 9 or 10
   sudo sed -i 's/port = 5432/port = 5433/' /etc/postgresql/${POSTGRES_MAJOR_VERSION}/main/postgresql.conf
@@ -20,7 +25,7 @@ if [[ $POSTGRES_MAJOR_VERSION -lt 11 ]]; then
 
   sudo service postgresql start
 
-else 
+else
   # Setup postgres 11 or higher
 
   #Copy defauilt hba config file and tell postgres to restart