CI: rename the qemu jobs to b2c

To avoid some confusion regarding "is this still on the qemu templates?"

Part-of: <https://gitlab.freedesktop.org/libevdev/libevdev/-/merge_requests/133>

.gitlab-ci.yml

@@ -589,7 +589,7 @@ soname:
     # runs the test suite only
     - /app/boot2container
 
-qemu:meson:
+b2c:meson:
   stage: VM
   extends:
     - .fdo.distribution-image@fedora
@@ -598,9 +598,9 @@ qemu:meson:
   needs:
     - "fedora:43@container-prep"
 
-qemu:meson:valgrind:
+b2c:meson:valgrind:
   extends:
-    - qemu:meson
+    - b2c:meson
   variables:
     MESON_TEST_ARGS: '--setup=valgrind'
 

.gitlab-ci/ci.template

@@ -418,7 +418,7 @@ soname:
 
 {% for distro in distributions if distro.use_for_qemu_tests %}
 {% set version = "{}".format(distro.versions|last()) %}
-qemu:meson:
+b2c:meson:
   stage: VM
   extends:
     - .fdo.distribution-image@{{distro.name}}
@@ -427,9 +427,9 @@ qemu:meson:
   needs:
     - "{{distro.name}}:{{version}}@container-prep"
 
-qemu:meson:valgrind:
+b2c:meson:valgrind:
   extends:
-    - qemu:meson
+    - b2c:meson
   variables:
     MESON_TEST_ARGS: '--setup=valgrind'