!! Not tested with an actual !!
!! configured `ext_pillar` yet !!
- jinja on RHEL/CentOS 6 has no 'mapping'
test (see salt-formula issue #193)
- {% do ... %} allows no assignment, only
function calls
- of course, `type(foo) is dict` doesn't
work because it's no jinja test
- maybe `.isinstance()` would be nicer/more
reliable