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Revert "rackspace -> maxlinc, to make sure travis works"

This reverts commit c56e9e6d7ac987d0b073f79a545df94fc4d609bf.
diff --git a/acceptance/libargs.go b/acceptance/libargs.go
index c87973b..78fde06 100644
--- a/acceptance/libargs.go
+++ b/acceptance/libargs.go
@@ -3,7 +3,7 @@
 import (
 	"crypto/rand"
 	"fmt"
-	"github.com/maxlinc/gophercloud"
+	"github.com/rackspace/gophercloud"
 	"os"
 	"time"
 )