foo.yaml

salt% cat config.sls 
include:
  - pgbouncer.install
  - pgbouncer.service

{% set pgbouncer = salt.pillar.get('pgbouncer') %}

pgbouncer_ini:
  ini.options_present:
    - name: {{ pgbouncer.lookup.config }}
    - sections: 
        {{ pgbouncer.config|yaml|indent(2) }} 
        databases:
          '*': auth_user = pgbouncer
    - require:
      - pkg: pgbouncer
    - watch_in:
      - service: pgbouncer_service

salt% salt chouffe.prod.lan state.show_sls pgbouncer
[WARNING ] Failed to open log file, do you have permission to write to /var/log/salt/master?
chouffe.prod.lan:
    - Rendering SLS 'base:pgbouncer.config' failed: while parsing a block mapping
        in "<string>", line 10, column 7:
              - sections: 
                ^
      expected <block end>, but found '<block mapping start>'
        in "<string>", line 13, column 9:
                  databases:
                  ^
ERROR: Minions returned with non-zero exit code