AETHER-618 Update shellcheck link

Change-Id: Icc99a3464f5860824d59432c93ae736b54536757
diff --git a/packer/provision/baseline.sh b/packer/provision/baseline.sh
index a966a45..209f4b0 100644
--- a/packer/provision/baseline.sh
+++ b/packer/provision/baseline.sh
@@ -165,7 +165,7 @@
      # Install Shellcheck from archive
      SHELLCHECK_VERSION="v0.6.0"
      SHELLCHECK_SHA256SUM="95c7d6e8320d285a9f026b5241f48f1c02d225a1b08908660e8b84e58e9c7dce"
-     curl -L -o /tmp/shellcheck.tar.xz https://storage.googleapis.com/shellcheck/shellcheck-${SHELLCHECK_VERSION}.linux.x86_64.tar.xz
+     curl -L -o /tmp/shellcheck.tar.xz https://github.com/koalaman/shellcheck/releases/download/${SHELLCHECK_VERSION}/shellcheck-${SHELLCHECK_VERSION}.linux.x86_64.tar.xz
      echo "$SHELLCHECK_SHA256SUM  /tmp/shellcheck.tar.xz" | sha256sum -c -
      pushd /tmp
      tar -xJvf shellcheck.tar.xz