Run an additional respdiff job for merge requests and schedules

On MRs it uses the merge target as the reference.
In schedules it uses the latest released version for this branch as the
reference.

(cherry picked from commit 9a6e8b9190)

.gitlab-ci.yml

@@ -1611,6 +1611,33 @@ respdiff-third-party:
     - bash respdiff.sh -s third_party -q "${PWD}/100k_mixed.txt" -c 1 -w "${PWD}/rspworkdir" "${CI_PROJECT_DIR}"
     - cd ../.. && make clean >/dev/null 2>&1
 
+.respdiff-recent-named: &respdiff_recent_named
+  <<: *respdiff_job
+  <<: *debian_bookworm_amd64_image
+  <<: *default_triggering_rules
+  needs:
+    - job: ci-variables
+      artifacts: true
+  script:
+    - cd ${CI_PROJECT_DIR}
+    - mkdir version-under-test
+    - cp -ar bin version-under-test/
+    - BASELINE=${CI_MERGE_REQUEST_TARGET_BRANCH_NAME:-$BIND_BASELINE_VERSION}
+    - git fetch --unshallow origin ${BASELINE}
+    - git checkout FETCH_HEAD
+    - autoreconf -fi
+    - *configure
+    - make -j${BUILD_PARALLEL_JOBS:-1} V=1
+    - cd bind9-qa/respdiff
+    - bash respdiff.sh -s named -q "${PWD}/100k_mixed.txt" -c 3 -w "${PWD}/rspworkdir" "${CI_PROJECT_DIR}/version-under-test" "${CI_PROJECT_DIR}/bin/named/named"
+
+respdiff:recent-named:
+  <<: *respdiff_recent_named
+  variables:
+    CC: gcc
+    CFLAGS: "${CFLAGS_COMMON} -Og -DISC_TRACK_PTHREADS_OBJECTS"
+    MAX_DISAGREEMENTS_PERCENTAGE: "0.3"
+
 # Performance tests
 
 shotgun:udp: