[Server] use Cram tests to avoid oracle diffs in Windows

nix/kernel-tests.nix

src/plugins/server/tests/batch/ast_services.t/ast_services.i

...ugins/server/tests/batch/ast_services.t/ast_services.json

src/plugins/server/tests/batch/ast_services.t/run.t

src/plugins/server/tests/batch/oracle/ast_services.out.json

...plugins/server/tests/batch/oracle/ast_services.res.oracle

src/plugins/server/tests/batch/oracle/wrong.out.json

src/plugins/server/tests/batch/oracle/wrong.res.oracle

src/plugins/server/tests/batch/wrong.i

src/plugins/server/tests/batch/wrong.t/run.t

src/plugins/server/tests/batch/wrong.t/wrong.i

src/plugins/server/tests/batch/wrong.t/wrong.json