egorResolution.md

My .sls file

/home/{{app_user}}/.ssh/keyname:
  file.managed:
    - context:
      app_name: {{topID}}
    - user: {{app_user}}
    - group: {{app_user}}
    - mode: 600
    - source: salt://pathto/template.jinja
    - template: jinja
    - require:
      - file: /home/{{app_user}}/.ssh
      - user: {{app_user}}

My updated jinja template

{{ salt['pillar.get']('%s:keyvalue'|format(app_name),'keynotfound') }}