semaphore: skip some tests

semaphore CI runs are always very close to the limit of 1hr, and often
time out when it's particularly oversubscribed.
Skip some low-value test cases to shorten the runtime.

(cherry picked from commit e19cae12ff2e832ce7d79aa483e1aa27ed0ea1f4)
(cherry picked from commit e768cf55b19caec6c8936050b245f398aba8b884)
(cherry picked from commit 9552927230915c96d4f995b9fca49e4eb78a02ec)
(cherry picked from commit f9033baefb)

.semaphore/semaphore-runner.sh

@@ -106,6 +106,9 @@ EOF
                                                        --env DPKG_DEB_COMPRESSOR_TYPE="none" \
                                                        --env DEB_BUILD_PROFILES="noudeb nodoc" \
                                                        --env TEST_UPSTREAM=1 \
+                                                       --skip-test localed-locale \
+                                                       --skip-test localed-x11-keymap \
+                                                       --skip-test build-with-static-libsystemd \
                                                        ../systemd_*.dsc \
                                                        -o "$ARTIFACTS_DIR" \
                                                        -- lxc -s "$CONTAINER" \