Accept token files with newlines

Previously if a token file contained a newline, the upgrade plan would
fail. This commit fixes that bug. Token files with newlines will not
cause an error.

Author: reidmv

Diff for: tasks/puppet_infra_upgrade.rb

@@ -51,7 +51,7 @@ def request_object(nodes:, token_file:)
 
     request = Net::HTTP::Post.new(inventory_uri.request_uri)
     request['Content-Type'] = 'application/json'
-    request['X-Authentication'] = token
+    request['X-Authentication'] = token.chomp
     request.body = body
 
     request