Ignore logfiles that end in digits by default.

playbooks/roles/splunkforwarder/templates/opt/splunkforwarder/etc/system/local/inputs.conf.j2

@@ -2,7 +2,7 @@
 
 {% for loggable in SPLUNKFORWARDER_LOG_ITEMS%}
 [monitor://{{ loggable.source }}]
-blacklist = \.(gz)$
+blacklist = ((\.(gz))|\d)$
 {% if loggable.recursive | default(False) %}
 {# There's a bug in which "recursive" must be unset for logs to be forwarded #}
 {# See https://answers.splunk.com/answers/420901/splunk-not-matching-files-with-wildcard-in-monitor.html #}