kibana-keystore ignores path.data config

[mshavliuk]

Kibana version: 7.14.1

Original install method (e.g. download page, yum, from source, etc.): docker run arm64v8/kibana:7.14.1

Describe the bug:
The documentation says:

The file kibana.keystore will be created in the directory defined by the path.data configuration setting.

Meanwhile, the path.data has a default value 'data', see docs

So I would expect the keystore file to be created in /usr/share/kibana/data by default (1), or in any other directory specified in /usr/share/kibana/config/kibana.yml by path.data config line (2).

None of the (1) nor (2) assumptions are actually correct.

Steps to reproduce:

1. Execute the create command with default configs.
   Run the command

   docker run --rm arm64v8/kibana:7.14.1 bin/kibana-keystore create

2. Execute the create command with modified path.data config.
   Run the command

   docker run --rm arm64v8/kibana:7.14.1 bash -c \
     "printf \"\npath.data: '/var/data'\n\" >> /usr/share/kibana/config/kibana.yml; \
     bin/kibana-keystore create"

Output:

Created Kibana keystore in /usr/share/kibana/config/kibana.keystore

Created Kibana keystore in /usr/share/kibana/config/kibana.keystore

Expected behavior:
Output:

Created Kibana keystore in /usr/share/kibana/data/kibana.keystore

Created Kibana keystore in /var/data/kibana.keystore

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)

[jbudz]

Thanks for filing @mshavliuk - I'll get the docs updated. In the meantime - we moved the keystore to the config folder to be consistent with other applications in the stack. This is controlled by the environment variable KBN_PATH_CONF