MCOL-5174: Create bash script to restart processes in a loop.

[add] loop_process_starter.sh to oam/install_scripts
[fix] oam/install_scripts/CMakeLists.txt

oam/install_scripts/loop_process_starter.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Top level script for automatically restart failed columnstore processes.
+# Use it to start any columnstore process.
+# Eg:
+#     loop_process_starter.sh workernode DBRM_Worker2
+#     loop_process_starter.sh PrimProc
+
+PROGNAME="$0"
+USAGE="Usage: ${PROGNAME} [binary_name:required] [binary_startup_args|optional] [log_filename|optional]"
+BINARY_NAME="${1:?No binary name given. ${USAGE}}"
+ARG=${2:-""}
+LOWER_BINARY_NAME="$(echo ${BINARY_NAME} | tr [:upper:] [:lower:])"
+LOG_FILENAME="${3:-${LOWER_BINARY_NAME}}.log"
+
+while true; do
+    echo $BINARY_NAME $ARG $LOG_FILENAME
+    ${BINARY_NAME} ${ARG} &>> ${LOG_FILENAME}
+    echo "$(date): ${BINARY_NAME} failed, restarting." >> ${LOG_FILENAME}
+    sleep 1
+done