Added dockerfile for tests.

It is now possible to run testsuite in docker, using supplied file.
See instructions in t/README.

Tests are adjusted to run on alpine linux which includes modular builds
of openldap server software.

Merge pull request nginxinc#42 from trunk-studio/fix/readme

Add Comment for HTTP basic authentication.

Merge pull request nginxinc#42 from trunk-studio/fix/readme

Add Comment for HTTP basic authentication.

Merge pull request nginxinc#11 from thresheek/master

Added systemd service file and rpm spec file

Merge pull request nginxinc#6 from ClassicTim/add_rh_ctl_script

Added CTL script for RedHat linux.

2nd try to fix formatting.