Automation: Verify release artifacts on grafana.com (#89197)

* baldm0mma/verify_release/ create verify_release_for_download function

* baldm0mma/verify_release/ add name, image, env

* baldm0mma/verify_release/ add initial commands

* baldm0mma/verify_release/ add deps?

* baldm0mma/verify_release/ update location

* baldm0mma/verify_release/ add anno to lib-star

* bald0mma/verify_release/ update func name to verify_grafanacom_step

* baldm0mma/verify_release/ add verify shell script

* baldm0mma/verify_release/ add script content, first attempt

* baldm0mma/verify_release/ add node image to verify_grafanacom_step

* baldm0mma/verify_release/ add gcom secret note

* baldm0mma/verify_release/ add sudo to apt-get

* baldm0mma/verify_release/ add anno

* baldm0mma/verify_release/ add anno to secrets

* baldm0mma/verify_release/ update commands to reflect node env image

* baldm0mma/verify_release/ update annos

* baldm0mma/verify_release/ update tag variable

* baldm0mma/verify release/ add whitespace

* baldm0mma/verify_releases/ update with no bash loops

* baldm0mma/verify_release/ update exit logic

* baldm0mma/verify_release/ remove annos

* baldm0mma/verify_releasse/ resign and build yml

* baldm0mma/verify_release/ remove annos

* baldm0mma/verify_release/ update signature

* baldm0mma/verify_release/ download curl

* baldm0mma/verify_release/ remove temp key folder removal

* baldm0mma/verify_release/ account for artifact download time

* baldm0mma/verify_release/ add anno

* baldm0mma/verify_release/ update location

* baldm0mma/verify_release/ update script

* baldm0mma/verify_release/ make drone

* baldm0mma/verify_release/ update script for oss or ent

* baldm0mma/verify_release/ add promotion option

* baldm0mma/verify_release/ make drone

* Update scripts/drone/events/release.star

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* Update scripts/drone/steps/lib.star

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* Update scripts/drone/steps/lib.star

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* baldm0mma/verify_release/ update drone

* Update scripts/drone/events/release.star

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* baldm0mma/verify_release/ update drone

* Update scripts/drone/steps/lib.star

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* baldm0mma/update drone

* baldm0mma/verify_release/ update path

* baldm0mma/verify_release/ make drone

* baldm0mma/update drone

* Apply suggestions from code review

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* baldm0mma/verify_release/ update for loop to account for failure

* baldm0mma/verify_release/ make drone

* baldm0mma/verify_release/ make format-drone

* baldm0mma/verify_release/ rem unused var

---------

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

scripts/drone/events/release.star

@@ -21,6 +21,7 @@ load(
     "remote_alertmanager_integration_tests_steps",
     "verify_gen_cue_step",
     "verify_gen_jsonnet_step",
+    "verify_grafanacom_step",
     "wire_install_step",
     "yarn_install_step",
 )
@@ -203,6 +204,7 @@ def publish_packages_pipeline():
         publish_linux_packages_step(package_manager = "deb"),
         publish_linux_packages_step(package_manager = "rpm"),
         publish_grafanacom_step(ver_mode = "release"),
+        verify_grafanacom_step(),
     ]
 
     deps = [
@@ -211,6 +213,16 @@ def publish_packages_pipeline():
     ]
 
     return [
+        pipeline(
+            name = "verify-grafanacom-artifacts",
+            trigger = {
+                "event": ["promote"],
+                "target": "verify-grafanacom-artifacts",
+            },
+            steps = [
+                verify_grafanacom_step(depends_on = []),
+            ],
+        ),
         pipeline(
             name = "publish-packages",
             trigger = trigger,