disabled nestloops on default instalations

postgresql.postinstall

@@ -22,6 +22,7 @@ su - postgres -c "/opt/postgresql/bin/initdb -D /var/opt/postgresql/data"
 # enable the X5 compatibility options
 sed -i -e "s,^#default_with_oids\ =\ off,default_with_oids\ =\ on," \
     -e "s,^#backslash_quote\ =\ safe_encoding,backslash_quote\ =\ on," \
+    -e "s,^#enable_nestloop\ =\ on,enable_nestloop\ =\ off," \
     -e "s,^#add_missing_from\ =\ off,add_missing_from\ =\ on," /var/opt/postgresql/data/postgresql.conf
 
 sed -i -e "s,postmaster -i,postmaster -i -o -e," /etc/opt/postgresql/run