Fix wrong path of log dir

Description

As README says for filebeat_inputs variable for path option:

When no module is used only files with .log extension will be gathered.

However this os not true, because path defined in filebeat.yml.j2 template schould be change from that:

      - "{{ _filebeat_container_logs_directory }}/{{ _input.name }}.log"

na taką:

      - "{{ _filebeat_container_logs_directory }}/{{ _input.name }}/*.log"