refresh: true v2

[wolfgang-s]

• refresh: true be default for change operations
• configurable on datasource level (set it to true)
• configurable on per model and operation level (true, false, "wait_for")
• if not true, explicitly setting it to false (ES default)

[slnode]

Can one of the admins verify this patch? To accept patch and trigger a build add comment ".ok\W+to\W+test."

[aquid]

@wolfgang-s Great work done, after merging will test it locally and soon release a new version. Thanks for your contribution 👍

cc @pulkitsinghal

[aquid]

@wolfgang-s Released version 1.3.4. Enjoy 🥇