Fix warnings

[multani]

Pull Request Checklist

Fixes #9

General

• [x] Update Changelog following the conventions laid out on Keep A Changelog

• [ ] Update README with any necessary configuration snippets

• [ ] Binstubs are created if needed

• [x] RuboCop passes

• [x] Existing tests pass

Purpose

Fix some runtime warnings. Test artifact:

Before:

$ cat <<EOF | bundle exec bin/handler-hipchat.rb
{
  "client": {
    "name": "client"
  },
  "check": {
    "status": 1,
    "name": "name",
    "source": "source",
    "output": "Hello, warning"
  }
}
EOF

warning: event filtering in sensu-plugin is deprecated, see http://bit.ly/sensu-plugin
connection refused attempting to query the sensu api for a stash
connection refused attempting to query the sensu api for a stash
connection refused attempting to query the sensu api for a stash
warning: occurrence filtering in sensu-plugin is deprecated, see http://bit.ly/sensu-plugin
bin/handler-hipchat.rb:87:in `handle': Object#timeout is deprecated, use Timeout.timeout instead.
$

After:

$ cat <<EOF | bundle exec bin/handler-hipchat.rb
{
  "client": {
    "name": "client"
  },
  "check": {
    "status": 1,
    "name": "name",
    "source": "source",
    "output": "Hello, warning"
  }
}
EOF
$

(and yes, the message still arrives in Hipchat :p )

Known Compatibility Issues

The sensu-plugin gem has been updated, but I don't think what this handler does with it should break anything.

[majormoses]

released: https://rubygems.org/gems/sensu-plugins-hipchat/versions/3.0.0