[TASK] Provide nginx basic configuration (Revision 2)

This adds an example configuration file which can
simply be include'd in any relevant nginx configuration
file.

Change-Id: I126ce5b1cc8fff39ef571619e2be30bd1c5ecc92
Resolves: #8923
Releases: master
Revision-Id: ec96f473b0254c91cee8cf5d6273aa45aa4100eb