Add a coverity job that runs cov-build and submit the archive to coverity.com

.gitlab-ci.yml

@@ -102,3 +102,13 @@ test:fedora:
   stage: test
   image: biboumi-test-fedora:latest
   <<: *basic_test
+
+test:coverity:
+  stage: test
+  image: biboumi-test-fedora:latest
+  script:
+    - export PATH=$PATH:~/coverity/bin
+    - cmake .. -DWITHOUT_SYSTEMD=1
+    - cov-build --dir cov-int   make biboumi test_suite -j$(nproc)
+    - tar czvf biboumi_coverity.tgz cov-int
+    - curl --form token=$COVERITY_TOKEN   --form email=louiz@louiz.org   --form file=@biboumi_coverity.tgz  --form version="$(git rev-parse --short HEAD)" --form description="Automatic submission by gitlab-ci" https://scan.coverity.com/builds?project=louiz%2Fbiboumi

docker/biboumi-test/fedora/Dockerfile

@@ -59,6 +59,8 @@ RUN rm -rf /charybdis
 
 RUN su - tester -c "echo export LANG=en_GB.utf-8 >> /home/tester/.bashrc"
 
+COPY coverity /home/tester/coverity
+
 WORKDIR /home/tester
 USER tester