Need to fix some params as Integer in Redis output

[metrax]

Please add these lines to the template:

<%- if @filebeat_config['output']['redis']['db'] -%>
<%- @filebeat_config['output']['redis']['db'] = Integer(@filebeat_config['output']['redis']['db']) -%>
<%- end -%>
<%- if @filebeat_config['output']['redis']['db_topology'] -%>
<%- @filebeat_config['output']['redis']['db_topology'] = Integer(@filebeat_config['output']['redis']['db_topology']) -%>
<%- end -%>
<%- if @filebeat_config['output']['redis']['timeout'] -%>
<%- @filebeat_config['output']['redis']['timeout'] = Integer(@filebeat_config['output']['redis']['timeout']) -%>
<%- end -%>
<%- if @filebeat_config['output']['redis']['reconnect_interval'] -%>
<%- @filebeat_config['output']['redis']['reconnect_interval'] = Integer(@filebeat_config['output']['redis']['reconnect_interval']) -%>
<%- end -%>

Else filebeat cannot start:

Aug 10 16:52:04 robert2 filebeat[44273]: Loading config file error: YAML config parsing failed on /etc/filebeat/filebeat.yml: yaml: unmarshal errors:
Aug 10 16:52:04 robert2 filebeat[44273]: line 15: cannot unmarshal !!str 0 into int
Aug 10 16:52:04 robert2 filebeat[44273]: line 16: cannot unmarshal !!str 1 into int
Aug 10 16:52:04 robert2 filebeat[44273]: line 17: cannot unmarshal !!str 5 into int
Aug 10 16:52:04 robert2 filebeat[44273]: line 18: cannot unmarshal !!str 1 into int. Exiting.

[pcfens]

Thanks for this. I've pushed a release with the fix to the forge as v0.7.4.