Wishlist: Insert test cases in nested test plan

[Nara Huang]

Refer to http://checkbox.readthedocs.io/en/latest/nested-test-plan.html
Now we can have nested test plan, but when we want to arrange test cases, especially to insert test cases in nested test plan, it would need to nest multiple test plans.

But if we can insert test cases after specific test case in other test plan, it would be more convenient.

For example:
In test plan foo, nest test plan bar, but insert multiple test cases in bar

Test plan foo:
include:
    foo1
    foo2
    foo3
nested_part:
    bar

Test plan bar:
A
B
C
D
E

Desired test plan:
A
B
foo1
foo2
C
D
foo3
E

If we can insert foo1, foo2 after specific test case "B", that we be nice.

[Sylvain Pineau (sylvain-pineau)]

Only possible with more nested parts.