Drone: Identify Drone runner for each pipeline (#26573)

* Drone: Identify Drone runner for each pipeline

.drone.yml

@@ -8,6 +8,11 @@ platform:
   arch: amd64
 
 steps:
+- name: identify-runner
+  image: alpine:3.12
+  commands:
+  - echo $DRONE_RUNNER_NAME
+
 - name: initialize
   image: grafana/build-container:1.2.21
   commands:
@@ -236,6 +241,11 @@ platform:
   arch: amd64
 
 steps:
+- name: identify-runner
+  image: alpine:3.12
+  commands:
+  - echo $DRONE_RUNNER_NAME
+
 - name: initialize
   image: grafana/build-container:1.2.21
   commands:

scripts/lib.star

@@ -126,6 +126,14 @@ def pipeline(name, edition, trigger, steps, services=[]):
             'disable': True,
         }
 
+    pipeline['steps'].insert(0, {
+        'name': 'identify-runner',
+        'image': alpine_image,
+        'commands': [
+            'echo $DRONE_RUNNER_NAME',
+        ],
+    })
+
     return pipeline
 
 def init_steps(edition):