reactor.conf

# this is /etc/salt/master.d/reactor.conf
reactor:
    - 'salt/netapi/hook/deploy':
        - /srv/salt-dev/reactor/deploy.sls

    - 'salt/presence/change':
        - /srv/salt-dev/reactor/dns.sls

    - 'salt/netapi/hook/services/reload':
        - /srv/salt-dev/reactor/services/reload.sls

    - 'salt/netapi/hook/add_certificate':
        - /srv/salt-dev/reactor/misc/add_certificate.sls

reload.sls

#!py
# this is /srv/salt-dev/reactor/services/reload.sls
def run():
    ret = {}

    payload = data.get('post')
    tgt = payload['tgt']
    service = payload['service']

    ret['Restart Service {0} for {1}'.format(service, tgt)] = {
        'local.state.sls': [
            {'tgt': tgt},
            {'arg': ['general.reload_service']},
            {'kwarg': {
                'pillar': {'reload_service': service}
            }}
        ]
    }
    return ret

reload_service.sls

#!py
# this is /srv/salt-dev/general/reload_service.sls
def run():
    states = {}
    service = __pillar__['reload_service']

    states['Restart {0} triggered by Salt api call'.format(service)] = {
        'service.running': [
            {'name': service},
            {'reload': True}
        ]        
    }
    return states

salt-api.conf

# this is /etc/salt/master.d/salt-api.conf
rest_cherrypy:
    debug: True
    port: 80
    host: 10.170.246.24
    webhook_disable_auth: True
    webhook_url: /hook
    disable_ssl: True