Add missing path to header files

This makes the package build in rawhide

uwsgi-2.0.16-glfs.patch

@@ -0,0 +1,10 @@
+diff -up uwsgi-2.0.16/plugins/glusterfs/glusterfs.c.glfs uwsgi-2.0.16/plugins/glusterfs/glusterfs.c
+--- uwsgi-2.0.16/plugins/glusterfs/glusterfs.c.glfs	2018-04-03 14:35:48.099323330 +0200
++++ uwsgi-2.0.16/plugins/glusterfs/glusterfs.c	2018-04-03 14:35:07.573068567 +0200
+@@ -1,5 +1,5 @@
+ #include <uwsgi.h>
+-#include <api/glfs.h>
++#include <glusterfs/api/glfs.h>
+ 
+ extern struct uwsgi_server uwsgi;
+ 

uwsgi.spec

@@ -146,6 +146,8 @@ Patch6:         uwsgi_v8-314_compatibility.patch
 Patch7:         uwsgi_fix_mono.patch
 # https://github.com/unbit/uwsgi/pull/1768
 Patch8:         uwsgi-2.0.16-strict.patch
+# https://github.com/unbit/uwsgi/pull/1772
+Patch9:         uwsgi-2.0.16-glfs.patch
 BuildRequires:  curl,  python2-devel, libxml2-devel, libuuid-devel, jansson-devel
 BuildRequires:  libyaml-devel, ruby-devel
 %if %{with tcp_wrappers}
@@ -1146,6 +1148,7 @@ echo "plugin_dir = %{_libdir}/%{name}" >> buildconf/$(basename %{SOURCE1})
 %patch7 -p1
 %endif
 %patch8 -p1 -b .strict
+%patch9 -p1 -b .glfs
 
 #disable plug-ins
 %if %{without mongodblibs}