ci: switch to bitbake-builder for lava jobs

The old ostc-builder cannot be patched now as the project has been
migrated to the `distro/oniro` project.

This closes: #218

Signed-off-by: Chase Qi <chase.qi@linaro.org>

.oniro-ci/test-generic.yaml

@@ -7,7 +7,7 @@
 .lava-test:
   interruptible: true
   image:
-    name: registry.ostc-eu.org/ostc/containers/ostc-builder:latest
+    name: registry.booting.oniroproject.org/distro/oniro/bitbake-builder:latest
   variables:
     GIT_STRATEGY: none
     CI_LAVA_INSTANCE: "https://lava.ostc-eu.org/"
@@ -84,7 +84,7 @@
 .lava-report:
   interruptible: true
   image:
-    name: registry.ostc-eu.org/ostc/containers/ostc-builder:latest
+    name: registry.booting.oniroproject.org/distro/oniro/bitbake-builder:latest
   stage: report
   variables:
     GIT_STRATEGY: none