Multiple issues being fixed here.
1. The 4.0.0 release of the mailer plugin requires Ruby 2.3+, which is
not avaiable in CentOS/RHEL7. Pin it to the 3.0.0 release, which is
supported. While we're here, also pin the slack plugin.
Both use the pessimistic version operator, as used in the sensu-client
image.
2. The response code is 301 when get the
rabbitmq_clusterer-3.6.x-667f92b0.ez with curl. The rabbitmq source
has changed http to https.
3. OracleLinux repos definition was changed in official image.
Co-Authored-By: chenyaguang <chenyaguang@szzt.com.cn>
Change-Id: Idac8cb696c81c7413a3da79b4868f556ef36fc8d
Closes-Bug: #1820594
(cherry picked from commit 4058c8e298)
f623015add