Send Coverity reports to $GITLAB_USER_EMAIL instead of hard-coding it.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

.gitlab-ci.yml

@@ -115,7 +115,7 @@ Fedora/Coverity:
   - cov-analysis-linux64-*/bin/cov-build --dir cov-int make -j4
   - tar cfz cov-int.tar.gz cov-int
   - curl https://scan.coverity.com/builds?project=$COVERITY_SCAN_PROJECT_NAME
-    --form token=$COVERITY_SCAN_TOKEN --form email=dwmw2@infradead.org
+    --form token=$COVERITY_SCAN_TOKEN --form email=$GITLAB_USER_EMAIL
     --form file=@cov-int.tar.gz --form version="`git describe --tags`"
     --form description="`git describe --tags` / $CI_COMMIT_TITLE / $CI_COMMIT_REF_NAME:$CI_PIPELINE_ID "
   tags: