find source_vars_template in proper location

bin/start-failover-procedure.sh

@@ -23,7 +23,7 @@ function createIssue() {
   while read -r line; do
     # shellcheck disable=SC2001
     body=$(echo "$body"| sed "s#__${line}__#${!line}#")
-  done < <(grep -Eho 'export \w+' ./bin/source_vars_template.sh|cut -d" " -f2)
+  done < <(grep -Eho 'export \w+' "${SCRIPT_DIR}/source_vars_template.sh"|cut -d" " -f2)
 
   PROJECT_ID=${GITLAB_MIGRATION_PROJECT_PATH/\//%2f}
   curl --silent --fail --request POST -H "Private-Token: ${GITLAB_TOKEN}" "${GITLAB_INSTANCE}/api/v4/projects/${PROJECT_ID}/issues" --data-urlencode "title=${title}" --data-urlencode "description=${body}" > /dev/null