Merge pull request #7 from deztructor/master

[unit] nor data, nor blobs are required
[vault] additional status "absent"

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>
[unit] VAULT_GLOBAL_CONFIG_DIR can be used

VAULT_GLOBAL_CONFIG_DIR can overwrite global configuration directory
path

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>