MT#7137 Decrease default values in config and template

1) we don't have /etc/default and/or config.yml options for old releases
2) we need to decreate some option for low performance mode
3) services should never start with default options
(otherwise oom-killer does the job and kill services)

So, we have migrated all the options to installer under special
install option and are going to decrese config _and_ template
for old releases in deployment.sh
In this case VM after first reboot will have all the options in
low performance mode and we do not need apply changes.

deployment.sh

@@ -2036,18 +2036,25 @@ adjust_for_low_performance() {
   echo "Decreasing default resource usage"
   if expr $SP_VERSION \<= mr3.2.999 >/dev/null 2>&1 ; then
     # sems: need for NGCP <=mr3.2 (MT#7407)
-    sed -i -e 's/media_processor_threads=[0-9]\+$/media_processor_threads=1/g' ${TARGET}/etc/ngcp-config/templates/etc/sems/sems.conf.tt2
+    sed -e 's/media_processor_threads=[0-9]\+$/media_processor_threads=1/g' \
+        -i ${TARGET}/etc/ngcp-config/templates/etc/sems/sems.conf.tt2 \
+        -i ${TARGET}/etc/sems/sems.conf || true
   fi
 
   if expr $SP_VERSION \<= 3.1 >/dev/null 2>&1 ; then
     # kamailio: need for NGCP <=3.1 (MT#5513)
-    sed -i -e 's/tcp_children=4$/tcp_children=1/g' ${TARGET}/etc/ngcp-config/templates/etc/kamailio/proxy/kamailio.cfg.tt2 || true
+    sed -e 's/tcp_children=4$/tcp_children=1/g' \
+        -i ${TARGET}/etc/ngcp-config/templates/etc/kamailio/proxy/kamailio.cfg.tt2 \
+        -i ${TARGET}/etc/kamailio/proxy/kamailio.cfg || true
   fi
 
   if expr $SP_VERSION \<= mr3.2.999 >/dev/null 2>&1 ; then
     # nginx: need for NGCP <=mr3.2 (MT#7275)
-    sed -i -e 's/NPROC=[0-9]\+$/NPROC=2/g'       ${TARGET}/etc/ngcp-config/templates/etc/init.d/ngcp-panel.tt2 || true
+    sed -e 's/NPROC=[0-9]\+$/NPROC=2/g' \
-    sed -i -e 's/NPROC=[0-9]\+$/NPROC=2/g'       ${TARGET}/etc/ngcp-config/templates/etc/init.d/ngcp-www-csc.tt2 || true
+        -i ${TARGET}/etc/ngcp-config/templates/etc/init.d/ngcp-panel.tt2 \
+        -i ${TARGET}/etc/init.d/ngcp-panel \
+        -i ${TARGET}/etc/ngcp-config/templates/etc/init.d/ngcp-www-csc.tt2 \
+        -i ${TARGET}/etc/init.d/ngcp-www-csc || true
   fi
 
   # record configuration file changes