Forcefully change symlink to latest coverage reports.

@@ -24,7 +24,7 @@ coverage:dev:
     ci_upload@192.168.20.60:~/trbase/coverage_${CI_BUILD_ID}
   - >
     ssh ci_upload@192.168.20.60
-    ln -s trbase/coverage_${CI_BUILD_ID} trbase/coverage_latest
+    ln -sf trbase/coverage_${CI_BUILD_ID} trbase/coverage_latest
 
 coverage:tag:
  stage: test
@@ -34,7 +34,7 @@ coverage:tag:
   - make coverage-html
   - ssh ci_upload@192.168.20.60 install -d trbase
   - rsync -vaurl --delete tests/coverage ci_upload@192.168.20.60:~/trbase/
-  - ssh ci_upload@192.168.20.60 ln -s trbase/coverage trbase/coverage_latest
+  - ssh ci_upload@192.168.20.60 ln -sf trbase/coverage trbase/coverage_latest
 
 dist:
  stage: deploy