feat: source config_hdfs.sh automatically before starting onebox (apa…

…che#1708)

When run Pegasus to use the feature of backup data to HDFS (restore data from
HDFS is the same), it's needed to set the CLASSPATH enviroment variables, now
it is done by scripts/config_hdfs.sh. However, we have to source this script
manually before starting onebox.

This patch sources the script in ./run.sh automatically, updates config_hdfs.sh
to download hadoop package is it's not exist, and removes explicilt calling of
scripts/config_hdfs.sh in CI.

run.sh

@@ -685,7 +685,7 @@ function run_start_onebox()
         exit 1
     fi
 
-    echo "HDFS_SERVICE_ARGS $HDFS_SERVICE_ARGS"
+    source "${ROOT}"/scripts/config_hdfs.sh
     if [ $USE_PRODUCT_CONFIG == "true" ]; then
         [ -z "${CONFIG_FILE}" ] && CONFIG_FILE=${ROOT}/src/server/config.ini
         [ ! -f "${CONFIG_FILE}" ] && { echo "${CONFIG_FILE} is not exist"; exit 1; }
@@ -924,6 +924,7 @@ function run_start_onebox_instance()
         esac
         shift
     done
+    source "${ROOT}"/scripts/config_hdfs.sh
     if [ $META_ID = "0" -a $REPLICA_ID = "0" -a $COLLECTOR_ID = "0" ]; then
         echo "ERROR: no meta_id or replica_id or collector set"
         exit 1