Support for GCS WAL-E backups (#620)

* Support for WAL_GS_BUCKET and GOOGLE_APPLICATION_CREDENTIALS environtment variables

* Fixed merge issue but also removed all changes to support macos.

* Updated test to new format

* Missed macos specific changes

* Added documentation and addressed comments

* Update docs/administrator.md

* Update docs/administrator.md

* Update e2e/run.sh

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>

manifests/configmap.yaml

@@ -45,6 +45,7 @@ data:
   # enable_team_superuser: "false"
   enable_teams_api: "false"
   # etcd_host: ""
+  # gcp_credentials: ""
   # kubernetes_use_configmaps: "false"
   # infrastructure_roles_secret_name: postgresql-infrastructure-roles
   # inherited_labels: application,environment
@@ -100,6 +101,7 @@ data:
   # team_api_role_configuration: "log_statement:all"
   # teams_api_url: http://fake-teams-api.default.svc.cluster.local
   # toleration: ""
+  # wal_gs_bucket: ""
   # wal_s3_bucket: ""
   watched_namespace: "*"  # listen to all namespaces
   workers: "4"

manifests/operatorconfiguration.crd.yaml

@@ -216,10 +216,14 @@ spec:
                   type: string
                 aws_region:
                   type: string
+                gcp_credentials:
+                  type: string
                 kube_iam_role:
                   type: string
                 log_s3_bucket:
                   type: string
+                wal_gs_bucket:
+                  type: string
                 wal_s3_bucket:
                   type: string
             logical_backup:

manifests/postgresql-operator-default-configuration.yaml

@@ -88,8 +88,10 @@ configuration:
     # additional_secret_mount: "some-secret-name"
     # additional_secret_mount_path: "/some/dir"
     aws_region: eu-central-1
+    # gcp_credentials: ""
     # kube_iam_role: ""
     # log_s3_bucket: ""
+    # wal_gs_bucket: ""
     # wal_s3_bucket: ""
   logical_backup:
     logical_backup_docker_image: "registry.opensource.zalan.do/acid/logical-backup:master-58"