Change snapcraft authentication to use SNAPCRAFT_STORE_CREDENTIALS (#9326)

* try the easy thing of just doing what the error message says

* temporarily add deploy stage to extended tests to see if it uploads properly

* follow instructions on https://forum.snapcraft.io/t/snapcraft-authentication-options/30473

* just run the packaging jobs for speed

* fix formatting

* import changes from test- branch and revert temporary changes

* Update instructions in deploy-stage.yml

.azure-pipelines/templates/stages/deploy-stage.yml

@@ -13,8 +13,8 @@ stages:
       # credential file was created by running:
       #
       #   snapcraft logout
-      #   snapcraft login (provide the shared snapcraft credentials when prompted)
       #   snapcraft export-login --channels=beta,edge snapcraft.cfg
+      #     (provide the shared snapcraft credentials when prompted)
       #
       # Then the file was added as a secure file in Azure pipelines
       # with the name snapcraft.cfg by following the instructions at
@@ -24,7 +24,7 @@ stages:
       # https://docs.microsoft.com/en-us/azure/devops/pipelines/library/secure-files?view=azure-devops#q-how-do-i-authorize-a-secure-file-for-use-in-a-specific-pipeline.
       #
       # This file has a maximum lifetime of one year and the current
-      # file will expire on 2022-07-25 which is also tracked by
+      # file will expire on 2023-06-17 which is also tracked by
       # https://github.com/certbot/certbot/issues/7931. The file will
       # need to be updated before then to prevent automated deploys
       # from breaking.
@@ -64,7 +64,7 @@ stages:
               secureFile: snapcraft.cfg
           - bash: |
               set -e
-              snapcraft login --with $(snapcraftCfg.secureFilePath)
+              export SNAPCRAFT_STORE_CREDENTIALS=$(cat $(snapcraftCfg.secureFilePath))
               for SNAP_FILE in snap/*.snap; do
                 tools/retry.sh eval snapcraft upload --release=${{ parameters.snapReleaseChannel }} "${SNAP_FILE}"
               done

.gitignore

@@ -59,3 +59,4 @@ certbot-dns*/certbot-dns*_arm*.txt
 /certbot_amd64*.txt
 /certbot_arm*.txt
 certbot-dns*/snap
+snapcraft.cfg