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)
(cherry picked from commit bfcb6d025a)

.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" \