gen_fvp_*_yaml.sh: Add Gerrit metadata for LAVA job

To be able to cross-ref LAVA job run to Gerrit change which started it,
if any.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I64085510af8f81d6bf4cb965fd517089c961389c
diff --git a/script/gen_fvp_linux_yaml.sh b/script/gen_fvp_linux_yaml.sh
index 65a1edd..2b6f152 100755
--- a/script/gen_fvp_linux_yaml.sh
+++ b/script/gen_fvp_linux_yaml.sh
@@ -11,11 +11,14 @@
 # file also includes references to ${UPPERCASE} which are just normal shell
 # variables, replaced on spot.
 
+. $(dirname $0)/gen_gerrit_meta.sh
+
 cat <<EOF
 metadata:
   test_config: {TEST_CONFIG}
   fvp_model: {MODEL}
   build_url: ${BUILD_URL}
+${gerrit_meta}
 
 device_type: fvp
 job_name: fvp-linux-{TEST_CONFIG}