Release 1.0.13

* version 1.0.13
* remove Ubuntu Zesty from CI/build/packaging matrices (EOL)
* minor cleanups in build scripts
* improve report formatting for long latency values
* fileio: --file-extra-flags now accepts a list of flags rather
than just a single value
* OLTP: re-prepare prepared statements after reconnects, i.e. in
cases when a server connection is lost and sysbench is
configured to ignore such errors