all: Split up Fluent Bit vars

Instead of defining the common values for Fluent bit inputs, filters,
and outputs directly in the variables used by the _fluent-bit_ role, we
need to split these into reusable pieces.  This way, hosts and groups
that need to use a slightly different pipeline configuration can access
the default values without having to redefine them.

group_vars/all.yml

@@ -142,7 +142,7 @@ dnf_automatic_schedule: >-
      | string
   }} *-*-* 04:00:00 America/Chicago
 
-fluent_bit_filters:
+fluent_bit_default_filters:
 # Avoid log amplification from logging the result of sending logs!
 - name: grep
   match: host.fluent-bit.service
@@ -175,21 +175,28 @@ fluent_bit_filters:
   - message
   - tags
   - topic
-fluent_bit_outputs:
-- name: http
-  alias: victorialogs
-  match: host.*
+
+fluent_bit_filters: '{{ fluent_bit_default_filters }}'
+
+fluent_bit_output_template_victorialogs:
   host: logs.pyrocufflink.blue
   port: 443
   tls: true
   tls.verify: true
   tls.verify_hostname: true
   tls.ca_file: /etc/pki/ca-trust/source/anchors/dch-root-ca-r2.crt
-  uri: /insert/jsonline?_stream_fields=hostname,systemd_unit&_msg_field=message&_time_field=date
   format: json_lines
   json_date_format: iso8601
   log_response_payload: false
-- name: http
+
+fluent_bit_output_systemd:
+  name: http
+  alias: victorialogs
+  match: host.*
+  uri: /insert/jsonline?_stream_fields=hostname,systemd_unit&_msg_field=message&_time_field=date
+
+fluent_bit_output_ntfy:
+  name: http
   alias: ntfy
   workers: 1
   match: ntfy
@@ -202,3 +209,9 @@ fluent_bit_outputs:
   format: json_lines
   json_date_key: false
   log_response_payload: false
+
+fluent_bit_main_outputs:
+- '{{ fluent_bit_output_systemd | combine(fluent_bit_output_template_victorialogs) }}'
+- '{{ fluent_bit_output_ntfy }}'
+
+fluent_bit_outputs: '{{ fluent_bit_main_outputs }}'