gitlab-ci: run unit tests for n-acd with eBPF disabled

Enabling eBPF causes src/devices/tests/test-acd to fail:

    strace: bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_HASH, key_size=4, value_size=1, max_entries=8, map_flags=0, inner_map_fd=0, map_name="", map_ifindex=0, btf_fd=0, btf_key_type_id=0, btf_value_type_id=0}, 112) = -1 EPERM (Operation not permitted)

    NetworkManager-Message: 10:07:04.404: <warn>  [1554631624.4046] acd[0xa2b400,10]: couldn't init ACD for announcing addresses on interface 'nm-test-veth0': Operation not permitted

Interestingly it does not always fail. Seems to depend on the kernel
which is used in the containerized test environments of gitlab-ci.

For now, just disable eBPF and use the fallback implementation.

(cherry picked from commit a5869d1b35)

contrib/scripts/nm-ci-run.sh

@@ -98,6 +98,8 @@ run_autotools() {
             --enable-tests=yes \
             --with-crypto=$_WITH_CRYPTO \
             \
+            --with-ebpf=no \
+            \
             --with-libnm-glib=yes \
             --with-iwd=yes \
             --with-ofono=yes \
@@ -167,6 +169,8 @@ run_meson() {
         -D crypto=$_WITH_CRYPTO \
         -D docs=$_WITH_DOCS \
         \
+        -D ebpf=false \
+        \
         -D libnm_glib=true \
         -D iwd=true \
         -D ofono=true \