Bump HTTP poller version to auto-retry

Fixes #41

Author: andrewvc

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 2.0.1
+ - Bump http_client mixin to default to 1 retry for idempotent actions
+
 ## 2.0.0
  - Plugins were updated to follow the new shutdown semantic, this mainly allows Logstash to instruct input plugins to terminate gracefully, 
    instead of using Thread.raise on the plugins' threads. Ref: https://github.com/elastic/logstash/pull/3895

Gemfile

@@ -1,2 +1,2 @@
 source 'https://rubygems.org'
-gemspec
+gemspec

logstash-input-http_poller.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name = 'logstash-input-http_poller'
-  s.version         = '2.0.2'
+  s.version         = '2.0.3'
   s.licenses = ['Apache License (2.0)']
   s.summary = "Poll HTTP endpoints with Logstash."
   s.description = "This gem is a logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/plugin install gemname. This gem is not a stand-alone program."
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   # Gem dependencies
   s.add_runtime_dependency "logstash-core", ">= 2.0.0.beta2", "< 3.0.0"
   s.add_runtime_dependency 'logstash-codec-plain'
-  s.add_runtime_dependency 'logstash-mixin-http_client', ">= 1.0.1"
+  s.add_runtime_dependency 'logstash-mixin-http_client', ">= 2.1.0", "< 3.0.0"
   s.add_runtime_dependency 'stud', "~> 0.0.22"
 
   s.add_development_dependency 'logstash-codec-json'