moved deploy func to util

.buildkite/scripts/steps/publish_oas_docs.sh

@@ -3,37 +3,10 @@
 set -euo pipefail
 
 source .buildkite/scripts/common/util.sh
-
-## Install the bump CLI for just this step
-npm install -g bump-cli@^2.8.2
+source .buildkite/scripts/serverless/publish_oas/publish_oas_utils.sh
 
 echo "--- Publish OAS docs"
 
-deploy_to_bump() {
-  local file_path="${1:-}"
-  local doc_name="${2:-}"
-  local doc_token="${3:-}"
-  local branch="${4:-}"
-
-  echo "Checking diff for doc '$doc_name' against file '$file_path'..."
-  local result=$(bump diff $file_path --doc $doc_name --token $doc_token --branch $branch --format=json)
-  ## Bump.sh does not respond with JSON when the diff is empty so we need to handle possibly not JSON :'(
-  local change_count=$(tr '\n' ' '<<<$result | jq -R 'fromjson? | length')
-  if [[ ! -z $change_count && $change_count -gt 0 ]]; then
-    echo "Found $change_count changes..."
-    echo "About to deploy file '$file_path' to doc '$doc_name' on bump.sh..."
-    bump deploy $file_path \
-      --branch $branch \
-      --doc $doc_name \
-      --token $doc_token ;
-    echo ""
-    echo "Note: if there is a warning of unchanged docs we probably have unpublished deployments waiting."
-    echo "Go to https://bump.sh/elastic/dashboard to see all the docs in the hub."
-  else
-    echo "Did not detect changes for '$file_path'; not deploying. Got response: $result"
-  fi
-}
-
 if [[ "$BUILDKITE_BRANCH" == "main" ]]; then
   BUMP_KIBANA_DOC_NAME="$(vault_get kibana-bump-sh kibana-doc-name)"
   BUMP_KIBANA_DOC_TOKEN="$(vault_get kibana-bump-sh kibana-token)"