Monasca-log-agent fails to start if there is not connection to keysto…

…ne (#14)

The purpose of this commit is to provide mechanism for monasca-log-agent
to wait for keystone service for determined amount of times instead of
failing at first try.

Upgrade plugin version in gemspec (#12)

Retry failed requests inifinitely (#9)

Wait between retries in increasing steps.
Fixes #8

Merge pull request #6 from mattibf/issue5_flush_logs_on_close

Avoid data loss in stop
Send entries before stop (closes #5 )

Remove email of person that is not longer working on this plugin

on travis test against 5.6 and 6.0 logstash-core

Merge "Added https support"

Bulk mode and monasca-log-api v3.0 support

Following to the latest changes on monasca-log-api
to version 3.0, we changed the implementation of
logstash-output-plugin to support bulk mode.
In addition, the output plugin is now able to collect
events and send them after a configurable set of
settings.

Change-Id: I376166864f03aad436aa544ffb94c0d6e88f1751

[Flexibility] Adding API version to plugin

Log-API is a REST Api that is versioned.
Such version may change in future so therefore
a mechanism do specify such version is required
as well as detecting unsupported versions.

Change-Id: Ib36284e882591ce86ef7c66e550cf9f44e3ef8ba

BUG12085: Changed configuration variable

Change-Id: Idc307a8f9a4b66230dc29cc9ff22661077deeeac