Enable publishing packages from integrations-publish pipeline (elastic#9712)

Enable publishing packages from integrations-publish pipeline,
and remove corresponding step from the main pipeline.

Author: mrodm

.buildkite/pipeline.publish.yml

@@ -37,7 +37,8 @@ steps:
       memory: "8G"
     env:
       ARTIFACTS_FOLDER: "artifacts-to-sign"
-      DRY_RUN: "true"
+      # by default it will publish packages
+      DRY_RUN: "${DRY_RUN:-false}"
     depends_on:
       - step: "check"
         allow_failure: false

.buildkite/pipeline.yml

@@ -1,5 +1,4 @@
 # yaml-language-server: $schema=https://raw.githubusercontent.com/buildkite/pipeline-schema/main/schema.json
-
 env:
   SETUP_GVM_VERSION: "v0.5.2"
   LINUX_AGENT_IMAGE: "golang:${GO_VERSION}"
@@ -29,22 +28,6 @@ steps:
       cpu: "8"
       memory: "4G"
 
-  - label: ":package: Build packages"
-    key: "build-packages"
-    command: ".buildkite/scripts/build_packages.sh"
-    agents:
-      image: "${LINUX_AGENT_IMAGE}"
-      cpu: "8"
-      memory: "8G"
-    env:
-      ARTIFACTS_FOLDER: "artifacts-to-sign"
-      DRY_RUN: "false"
-    depends_on:
-      - step: "check"
-        allow_failure: false
-    artifact_paths:
-      - artifacts-to-sign/*.zip
-
   - label: "Trigger integrations"
     key: "test-integrations"
     command: ".buildkite/scripts/trigger_integrations_in_parallel.sh"