Fixes location of oximeter configuration in packaged SMF manifest (#216)

Author: bnaecker

smf/oximeter/manifest.xml

@@ -18,7 +18,7 @@
     </method_environment>
   </method_context>
   <exec_method type='method' name='start'
-    exec='ctrun -l child -o noorphan,regent /opt/oxide/oximeter/oximeter ./config.toml &amp;'
+	  exec='ctrun -l child -o noorphan,regent /opt/oxide/oximeter/oximeter /opt/oxide/oximeter/pkg/config.toml &amp;'
     timeout_seconds='0' />
   <exec_method type='method' name='stop' exec=':kill' timeout_seconds='0' />