OPNSense/plugins c7f2608www/nginx pkg-descr, www/nginx/src/etc/inc/plugins.inc.d nginx.inc

Merge pull request #1354 from opnsense/ngx_xmlrpc

www/nginx: add xmlrpc support
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+13-0www/nginx/src/etc/inc/plugins.inc.d/nginx.inc
+1-0www/nginx/pkg-descr
+14-02 files

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