lava_create_jobs.py: Reinstate build URL metadata

Fix regression from ac2d0f0771a where generation of metadata item for LAVA
job definitions was removed.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: Ie19af7fc5122651823105e95b3cc04a555148caa
diff --git a/lava_helper/lava_create_jobs.py b/lava_helper/lava_create_jobs.py
index 3bd7b39..0c78a7a 100755
--- a/lava_helper/lava_create_jobs.py
+++ b/lava_helper/lava_create_jobs.py
@@ -81,6 +81,7 @@
             "license_variable": vars(user_args).get('license_variable', ''),
             "enable_code_coverage": user_args.enable_code_coverage == "TRUE",
             "coverage_trace_plugin": coverage_trace_plugin,
+            "build_job_url": os.getenv("BUILD_URL"),
             "cpu0_baseline": config.get("cpu0_baseline", 0),
             "cpu0_initvtor_s": config.get("cpu0_initvtor_s", "0x10000000"),
             "psa_api_suite": os.getenv("TEST_PSA_API") if os.getenv("TEST_PSA_API") == "IPC" else "",