Error:
=====
Name: /etc/apache2/sites-available/ots.conf
Comment: Undefined jinja variable; line 51 in template
[...]
SetEnv BRAND {{ pillar['brand_long'] }}  <====================
[...]

pillar/top.sls
=====
base:
  'cr*':
    - cr

pillar/cr/init.sls
=====
brand_short: cr
brand_long: credacted
revision: "release_4.16.0"

### Dev ###
{% if grains['host'] == 'crwmi-dev' %}
environment_short: dev
environment_long: development

{% elif grains['host'] == 'crwmt-dev' %}
environment_short: dev
environment_long: development

{% elif grains['host'] == 'crwmc-dev' %}
environment_short: dev
environment_long: development

{% endif %}

salt/top.sls
=====
base:
  '*':
    - apache2
    - php5
    - postfix
    - git

  'crwm*-(dev|test|stg)':
    - match: pcre
    - trapmail

  'crwmi-dev':
    - match: pcre
    # Repos
    - repo.cr.internal
    # VHOSTS
    - apache2.vhosts.cr.internal

  'crwmt-dev':
    - match: pcre
    # Repos
    - repo.cr.tracking
    # VHOSTS
    - apache2.vhosts.cr.tracking

  'crwmc-dev':
    - match: pcre
    # Repos
    - repo.cr.tracking
    - repo.cr.internal

salt/apache2/vhosts/cr/internal.sls
=====
/etc/apache2/sites-available/ots.conf:
  file.managed:
    - source: salt://apache2/vhosts/ots.conf
    - template: jinja


salt/apache2/vhosts/ots.conf
=====
[...]
    SetEnv ENVIRONMENT {{ pillar['environment_long'] }}
    SetEnv BRAND {{ pillar['brand_long'] }}
</VirtualHost>