Add central logging for all actions done

log file "user_management.log"

Each line is
[YYYY-MM-DD HH:mm:ss] [script name] [TEST] ...

[TEST] is only set if we are in a test run

for create user, if info flag is set, we do not write a log

bin/check_last_login.sh

@@ -76,7 +76,7 @@ account_id=$(echo "${instance_data}" | jq .accountId)
 region=$(echo "${instance_data}" | jq .region)
 
 if [ "${OUTPUT_TARGET}" = "text" ]; then
-	LOG="${LOG}/check_ssh_user.$(date +"%F_%H%m%S").log";
+	LOG="${LOG}/check_ssh_user.$(date +"%F_%H%M%S").log";
 	exec &> >(tee -a "${LOG}");
 	echo "[START] =============>";
 	echo "AWS ID             : ${account_id}";