[BUG] path.data does not support lists

[darkpixel]

Elasticsearch docs support multiple data paths.

The path.data settings can be set to multiple paths, in which case all paths will be used to store data (although the files belonging to a single shard will all be stored on the same data path):

path:
  data:
    - /mnt/elasticsearch_1
    - /mnt/elasticsearch_2
    - /mnt/elasticsearch_3

See: https://www.elastic.co/guide/en/elasticsearch/reference/master/path-settings.html

Attempting to use a list produces the following output:

[CRITICAL] Rendering SLS 'base:elasticsearch.config' failed: while constructing a mapping
  in "<unicode string>", line 1, column 1:
    include:
    ^
found unacceptable key [ScalarNode(tag='tag:yaml.org,2002:str', value='/usr/shar
  in "<unicode string>", line 17, column 1:
    ['/usr/share/elasticsearch/data' ... 
    ^
local:
    Data failed to compile:
----------
    Rendering SLS 'base:elasticsearch.config' failed: while constructing a mappi
  in "<unicode string>", line 1, column 1:
    include:
    ^
found unacceptable key [ScalarNode(tag='tag:yaml.org,2002:str', value='/usr/shar
  in "<unicode string>", line 17, column 1:
    ['/usr/share/elasticsearch/data' ... 
    ^

[myii]

Thanks for the report @darkpixel.

Relevant parts of the formula to be adjusted:

elasticsearch-formula/pillar.example

Lines 8 to 9 in dea4703

	path.data: /srv/data
	path.logs: /srv/logs

• Need to show an example of path.data provided as a list as well.

elasticsearch-formula/elasticsearch/config.sls

Lines 15 to 19 in 2cbe705

	{% set data_dir = salt['pillar.get']('elasticsearch:config:path.data') %}
	{% set log_dir = salt['pillar.get']('elasticsearch:config:path.logs') %}
	{% for dir in (data_dir, log_dir) %}
	{% if dir %}

• Merge everything together into a single list to iterate over.