upgrade templates to latest version

[ezerk]

1. upgrade template engine versions to latest available version:

<mustache.version>0.9.6</mustache.version> <!-- Jan, 2019 -->
<freemarker.version>2.3.29</freemarker.version> <!-- Aug, 2019 -->
<velocity.version>2.1</velocity.version> <!-- Mar, 2019 -->
<thymeleaf.version>3.0.11.RELEASE</thymeleaf.version> <!-- Oct, 2018 -->
<trimou.version>2.5.0.Final</trimou.version> <!-- May, 2018 -->
<hbs.version>4.1.2</hbs.version> <!-- Oct, 2018-->
<rocker.version>1.2.2</rocker.version>  <!-- Sep, 2019 -->

2. upgrade 3rd party benchmark tool version

<jmh.version>1.22</jmh.version> <!-- Nov, 2019 -->

3. upgrade code to java8