Add ability to control which Elixir integration tests to run
New `elixir-suite` Makefile target is added. It runs a predefined set of elixir
integration tests.
The feature is controlled by two files:
- test/elixir/test/config/suite.elixir - contains list of all available tests
- test/elixir/test/config/skip.elixir - contains list of tests to skip
In order to update the `test/elixir/test/config/suite.elixir` when new tests
are added. The one would need to run the following command:
```
MIX_ENV=integration mix suite > test/elixir/test/config/suite.elixir
```
7 files changed
