remove eris-keys and fix imports

glide.lock

@@ -29,8 +29,6 @@ imports:
   version: 44cc805cf13205b55f69e14bcb69867d1ae92f98
 - name: github.com/ebuchman/fail-test
   version: c1eddaa09da2b4017351245b0d43234955276798
-- name: github.com/monax/eris-keys
-  version: 114ebc77443db9a153692233294e48bc7e184215
 - name: github.com/fsnotify/fsnotify
   version: 30411dbcefb7a1da7e84f75530ad3abe4011b4f8
 - name: github.com/Graylog2/go-gelf

glide.yaml

 package: github.com/hyperledger/burrow
 import:
-- package: github.com/monax/eris-keys
 - package: github.com/spf13/cobra
 - package: github.com/spf13/viper
 - package: github.com/gin-gonic/gin

logging/config/config.go

@@ -2,11 +2,11 @@ package config
 
 import (
 	"bytes"
-
 	"fmt"
 
-	"github.com/BurntSushi/toml"
 	"github.com/hyperledger/burrow/logging/structure"
+
+	"github.com/BurntSushi/toml"
 )
 
 type LoggingConfig struct {