Bug 1540095 - Use release type "release" instead of esr60 for repackage. r=darktrojan DONTBUILD

Thunderbird builds from comm-esr60 are release-type "release" rather than
"esr60". (Defined in m-c:taskcluster/taskgraph/decision.py:100).

taskcluster/ci/repackage-l10n/kind.yml

@@ -48,7 +48,7 @@ job-template:
                     - repackage/win64_signed.py
     package-formats:
         by-release-type:
-            esr60:
+            release:
                 by-build-platform:
                     linux-.*: [mar, mar-bz2]
                     linux64.*: [mar, mar-bz2]

taskcluster/ci/repackage/kind.yml

@@ -47,7 +47,7 @@ job-template:
                     - repackage/win64_signed.py
     package-formats:
         by-release-type:
-            esr60:
+            release:
                 by-build-platform:
                     linux-.*: [mar, mar-bz2]
                     linux64.*: [mar, mar-bz2]