TT#14516 Add more debug for ngcp-installer execution section from grml-chroot

It should improve debuging the situation with non-zero exit codes.

Change-Id: Icc5816ac0f710bc8b005bb136b2691e478361c5a

deployment.sh

@@ -1714,16 +1714,18 @@ EOT
   gen_installer_config
 
   # execute ngcp-installer
-  cat << EOT | grml-chroot $TARGET /bin/bash
+  cat << "EOT" | grml-chroot $TARGET /bin/bash
+echo "Running ngcp-installer via grml-chroot." | tee -a /tmp/ngcp-installer-debug.log
 ngcp-installer 2>&1 | tee -a /tmp/ngcp-installer-debug.log
-RC=\${PIPESTATUS[0]}
-if [ \$RC -ne 0 ] ; then
-  echo "ERROR: Fatal error while running ngcp-installer!" >&2
-  exit \$RC
+RC=${PIPESTATUS[0]}
+if [ "${RC}" = "0" ] ; then
+  echo "OK, ngcp-installer finished with exit code '${RC}', continue netscript deployment." | tee -a /tmp/ngcp-installer-debug.log
+else
+  echo "ERROR: Fatal error while running ngcp-installer (exit code '${RC}')!" | tee -a /tmp/ngcp-installer-debug.log >&2
+  exit ${RC}
 fi
 EOT
 
-  # baby, something went wrong!
   if [ $? -eq 0 ] ; then
     logit "installer: success"
   else