Support yaml inheritance over variable files

[t2d]

Using yaml implicit inheritance in one variable file works fine and saves a lot of configuration lines.
Also ansible has its own concept of inheritance, which is quite verbose.
What does not work, is combining both.

I would like to define a parent element in group_vars/all.yml and override (parts of) it in host_vars/test.yml.
To make this happen, ansible would need to merge yaml files before handing them to the yaml parser.

[t2d]

I edited the initial statement to underline that this is indeed a RFE. Please reopen.

[ansibot]

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[t2d]

We handled our specific case with using the combine filter.