Merge tag 'v4.3.20-alpha.2' into dev/v4.4.9

scripts/relup-base-packages.sh

@@ -70,7 +70,11 @@ otp_vsn_for() {
 for tag in $(../scripts/relup-base-vsns.sh $EDITION | xargs echo -n); do
     filename="$PROFILE-${tag#[e|v]}-otp$(otp_vsn_for "$tag")-$SYSTEM-$ARCH.zip"
     url="https://packages.emqx.io/$DIR/$tag/$filename"
-    if [ ! -f "$filename" ] && curl -L -I -m 10 -o /dev/null -s -w "%{http_code}" "${url}" | grep -q -oE "^[23]+" ; then
+    echo "downloading base package from ${url} ..."
+    if [ -f "$filename" ]; then
+        echo "file $filename already downloaded; skikpped"
+        continue
+    fi
     echo "downloading base package from ${url} ..."
     curl -L -o "${filename}" "${url}"
     if [ "$SYSTEM" != "centos6" ]; then
@@ -81,9 +85,6 @@ for tag in $(../scripts/relup-base-vsns.sh $EDITION | xargs echo -n); do
         ## https://askubuntu.com/questions/1202208/checking-sha256-checksum
         echo "${SUMSTR}  ${filename}" | $SHASUM -c || exit 1
     fi
-    else
-        echo "file $filename already downloaded or doesn't exist in the archives; skipping it"
-    fi
 done
 
 popd