ci(appveyor): tmp

.appveyor.yml

@@ -53,7 +53,8 @@ build: off
 
 environment:
   # unless indicated otherwise, we test datalad_next
-  DTS: datalad_next
+  DTS: datalad_next.config
+  COVERAGE_ROOT: /home/appveyor/DLTMP
   # SSH testing is done via a side-loaded container that provides a POSIX/SSHable
   # server environment
   DATALAD_TESTS_DOCKER_SSHD_SECKEY_DOWNLOADURL: https://ci.appveyor.com/api/projects/mih/datalad-ci-docker-containers/artifacts/recipes/sshd/id_rsa?job=sshd
@@ -111,6 +112,7 @@ environment:
       DATALAD_TESTS_SSH: 1
       DATALAD_TESTS_SERVER_SSH_SECKEY: C:\DLTMP\datalad_tests_id_rsa
       DATALAD_TESTS_SERVER_LOCALPATH: C:\DLTMP\sshdroot
+      COVERAGE_ROOT: "C:\DLTMP"
 
     # MacOS core tests
     - job_name: test-mac