set default values of REPLICATION_PORT and REPLICATION_SSLMODE in env-defaults

runtime/env-defaults

@@ -10,8 +10,8 @@ REPLICATION_MODE=${REPLICATION_MODE:-}
 REPLICATION_USER=${REPLICATION_USER:-}
 REPLICATION_PASS=${REPLICATION_PASS:-}
 REPLICATION_HOST=${REPLICATION_HOST:-}
-REPLICATION_PORT=${REPLICATION_PORT:-}
-REPLICATION_SSLMODE=${REPLICATION_SSLMODE:-}
+REPLICATION_PORT=${REPLICATION_PORT:-5432}
+REPLICATION_SSLMODE=${REPLICATION_SSLMODE:-prefer}
 
 DB_NAME=${DB_NAME:-}
 DB_USER=${DB_USER:-}

runtime/functions

@@ -126,10 +126,6 @@ initialize_database() {
   if [[ ! -f ${PG_DATADIR}/PG_VERSION ]]; then
     case ${REPLICATION_MODE} in
       slave|snapshot|backup)
-        # default params
-        REPLICATION_PORT=${REPLICATION_PORT:-5432}
-        REPLICATION_SSLMODE=${REPLICATION_SSLMODE:-prefer}
-
         if [[ -z $REPLICATION_HOST ]]; then
           echo "ERROR! Cannot continue without the REPLICATION_HOST. Exiting..."
           exit 1