[releng] Adding bitbucket pipeline configuration

bitbucket-pipelines.yml

@@ -2,6 +2,6 @@ image: nexus.cenotelie.fr/logilab/ld-build-env:latest
 pipelines:
   default:
     - step:
-      name: Build and test
-      script:
-        - ./build-src.sh
+        name: Build and test
+        script:
+          - ./build-src.sh
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