Update distribution-scripts

Updates `distribution-scripts` dependency to crystal-lang/distribution-scripts@1ee8983

This includes the following changes:

* crystal-lang/distribution-scripts#197

.circleci/config.yml

@@ -4,7 +4,7 @@ parameters:
   distribution-scripts-version:
     description: "Git ref for version of https://github.com/crystal-lang/distribution-scripts/"
     type: string
-    default: "e9cafa1a93a487169e561759e9a2d065c35e0770"
+    default: "1ee8983d46c594f97b6fe70a711c5dbefe83ab45"
   previous_crystal_base_url:
     description: "Prefix for URLs to Crystal bootstrap compiler"
     type: string

scripts/update-distribution-scripts.sh

@@ -5,7 +5,11 @@
 #
 # Usage:
 #
-#    scripts/update-distribution_scripts.sh [REF]
+#    scripts/update-distribution_scripts.sh [REF] [BRANCH]
+#
+# Parameters:
+# * REF: Git commit SHA in distribution-scripts (default: HEAD)
+# * BRANCH: Branch name for CI branch in crystal (default: ci/update-distribution-scripts)
 #
 # Requirements:
 # * packages: git gh sed
@@ -20,13 +24,13 @@ GIT_DS="git --git-dir=$DISTRIBUTION_SCRIPTS_WORK_DIR"
 
 $GIT_DS fetch origin master
 
-if [ -z "${1:-}"]; then
+if [ "${1:-"HEAD"}" = "HEAD" ]; then
   reference=$($GIT_DS rev-list origin/master | head -1)
 else
   reference=${1}
 fi
 
-branch="ci/update-distribution-scripts"
+branch="${2:-"ci/update-distribution-scripts"}"
 
 git switch -C "$branch" master
 
@@ -38,15 +42,19 @@ sed -i -E "/distribution-scripts-version:/{n;n;n;s/default: \".*\"/default: \"$r
 git add .circleci/config.yml
 
 message="Updates \`distribution-scripts\` dependency to https://github.com/crystal-lang/distribution-scripts/commit/$reference"
-log=$($GIT_DS log $old_reference..$reference --format="%s" | sed "s/.*(/\* crystal-lang\/distribution-scripts/;s/.$//")
-message="$message\n\nThis includes the following changes:\n\n$log"
+log=$($GIT_DS log $old_reference..$reference --format="%s" | sed "s/.*(/crystal-lang\/distribution-scripts/;s/^/* /;s/.$//")
+message=$(printf "$message\n\nThis includes the following changes:\n\n$log")
 
 git commit -m "Update distribution-scripts" -m "$message"
 
 git show
 
 git push -u upstream "$branch"
 
+# Confirm creating pull request
+echo "Create pull request for branch $branch? [y/N]"
+read -r REPLY
 
-# Create pull request
-gh pr create -R crystal-lang/crystal --fill --label "topic:infrastructure" --assignee "@me"
+if [ "$REPLY" = "y" ]; then
+  gh pr create -R crystal-lang/crystal --fill --label "topic:infrastructure" --assignee "@me"
+fi