Fix runners to do their best to gracefully stop on pod eviction (#1759)

Ref #1535
Ref #1581

Signed-off-by: Yusuke Kuoka <ykuoka@gmail.com>

test/startup/assets/logging.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+export LIGHTGREEN='\e[0;32m'
+export LIGHTRED='\e[0;31m'
+export WHITE='\e[0;97m'
+export RESET='\e[0m'
+
+log(){
+  printf "${WHITE}$@${RESET}\n" 2>&1
+}
+
+success(){
+  printf "${LIGHTGREEN}$@${RESET}\n" 2>&1
+}
+
+error(){
+  printf "${LIGHTRED}$@${RESET}\n" 2>&1
+}