Use an sftp uri unique to MCIEA

app/services/sftp/directory.rb

@@ -5,7 +5,7 @@ require 'csv'
 module Sftp
   class Directory
     def self.open(path: '/data/survey_responses/clean', &block)
-      sftptogo_url = ENV['SFTPTOGO_URL']
+      sftptogo_url = ENV['MCIEA_SFTPTOGO_URL']
       uri = URI.parse(sftptogo_url)
       Net::SFTP.start(uri.host, uri.user, password: uri.password) do |sftp|
         sftp.dir.foreach(path) do |entry|