fallback to excon 1.0+ error retry error settings (#728)

* fallback to excon 1.0+ error retry error settings

* bump to fog-core ~> 2.6 to get excon ~> 1.0

Author: geemus

fog-aws.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'shindo',  '~> 0.3'
 
   spec.add_dependency 'base64', '~> 0.2.0'
-  spec.add_dependency 'fog-core', '~> 2.1'
+  spec.add_dependency 'fog-core', '~> 2.6'
   spec.add_dependency 'fog-json', '~> 1.1'
   spec.add_dependency 'fog-xml', '~> 0.1'
 

lib/fog/aws/storage.rb

@@ -16,10 +16,7 @@ class Storage < Fog::Service
 
       DEFAULT_CONNECTION_OPTIONS = {
         retry_limit: 5,
-        retry_interval: 1,
-        retry_errors: [
-          Excon::Error::Timeout, Excon::Error::Socket, Excon::Error::Server
-        ]
+        retry_interval: 1
       }
 
       MIN_MULTIPART_CHUNK_SIZE = 5242880