Load configuration files in sorted order

Allows us to use rc.d-style setup where later files override contents
from previous ones, useful in a configuration management context.
4 jobs for master in 1 minute and 26 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #6132
test

00:00:22

 
  Build Src
passed #6133
build:src

00:00:15

 
  Build Pkg
passed #6134
build:pkg

00:00:30

 
  Upload
passed #6135
upload:pkg

00:00:17