Linux Packages: Handle publish to beta (grafana#57528)

Uses the feature added here: grafana/deployment_tools#46301
When a version is named "beta", it will be distributed in the beta distribution, rather than in stable

Co-authored-by: dsotirakis <dimitrios.sotirakis@grafana.com>

Author: julienduchesne

.drone.yml

@@ -3696,7 +3696,7 @@ steps:
   settings:
     access_key_id:
       from_secret: packages_access_key_id
-    deb_distribution: stable
+    deb_distribution: auto
     gpg_passphrase:
       from_secret: packages_gpg_passphrase
     gpg_private_key:
@@ -3718,7 +3718,7 @@ steps:
   settings:
     access_key_id:
       from_secret: packages_access_key_id
-    deb_distribution: stable
+    deb_distribution: auto
     gpg_passphrase:
       from_secret: packages_gpg_passphrase
     gpg_private_key:
@@ -3809,7 +3809,7 @@ steps:
   settings:
     access_key_id:
       from_secret: packages_access_key_id
-    deb_distribution: stable
+    deb_distribution: auto
     gpg_passphrase:
       from_secret: packages_gpg_passphrase
     gpg_private_key:
@@ -3831,7 +3831,7 @@ steps:
   settings:
     access_key_id:
       from_secret: packages_access_key_id
-    deb_distribution: stable
+    deb_distribution: auto
     gpg_passphrase:
       from_secret: packages_gpg_passphrase
     gpg_private_key:
@@ -5423,6 +5423,6 @@ kind: secret
 name: packages_secret_access_key
 ---
 kind: signature
-hmac: 96004f03bf2032c32fa88303da619580dd72f9a460d4bf90b4faacb7ccceb6b4
+hmac: bbc179e84a651150c80ff37442ae77605613dfdda47aa72604016b090715a12b
 
 ...

scripts/drone/steps/lib.star

@@ -1048,7 +1048,7 @@ def publish_linux_packages_step(edition, package_manager='deb'):
             'secret_access_key': from_secret('packages_secret_access_key'),
             'service_account_json': from_secret('packages_service_account'),
             'target_bucket': 'grafana-packages',
-            'deb_distribution': 'stable',
+            'deb_distribution': 'auto',
             'gpg_passphrase': from_secret('packages_gpg_passphrase'),
             'gpg_public_key': from_secret('packages_gpg_public_key'),
             'gpg_private_key': from_secret('packages_gpg_private_key'),