As a Developer I want to change the Security Server installation so that the JNA library is installed to /usr/share/xroad/lib so that it wouldn't cause problems for users

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Currently users can run into errors if /var is mounted with the noexec flag because we extract and use libraries from /var/tmp. To remedy this, it would be better if we installed them to /usr/share/xroad/lib so that they wouldn't need to be extracted at runtime. 

The JIRA issue that this was created from can be found here: https://nordic-institute.atlassian.net/browse/XRDDEV-1283

Acceptance criteria:

• The correct architecture version of the libjnidispatch.so library from the jna dependency is pre-installed to /usr/share/xroad/lib
• Debian and rpm packaging scripts are updated
• The installation is tested on Ubuntu 18.04/20.04, RHEL7/RHEL8
• It is checked that the library is used from the installation and not extracted at runtime
• All automated test pass