the install action for zabbix 5.0 on centos/redhat 7 is wrong

[taleintervenor]

Affected Puppet, Ruby, OS and module versions/distributions

• Puppet: puppet5-release-5.0.0-7
• Ruby:
• Distribution: CentOS Linux release 7.7.1908
• Module version: 8.0.0

How to reproduce (e.g Puppet code you use)

class { 'zabbix':
zabbix_version => $version,
}
set $version = 5.0

What are you seeing

puppet zabbix module try to install zabbix-web-mysql

What behaviour did you expect instead

according to zabbix official install instruction, only on centos/redhat 8 can find the zabbix-web-mysql package. when it is centos7, you need to install centos-release-scl and then install zabbix-web-mysql-scl package from the scl repo.

Output log

Error: Could not update: Execution of '/usr/bin/yum -d 0 -e 0 -y install zabbix-web-mysql' returned 1: Error: Nothing to do
Error: /Stage[main]/Zabbix::Web/Package[zabbix-web-mysql]/ensure: change from 'purged' to 'latest' failed: Could not update: Execution of '/usr/bin/yum -d 0 -e 0 -y install zabbix-web-mysql' returned 1: Error: Nothing to do (corrective)

Any additional information you'd like to impart

[jameskirsop]

This is a duplicate of #689 and the particular concern is being addressed in the open issue.