edge-controller: configure primary site mode through values (#101)

### Changelog

- Added: expose primary site configuration for edge controller through
helm chart values.

### Docs

foxglove/docs#481

### Description

It's possible to use an edge controller with a hosted primary site, but
right now users don't have a good way to configure that. This PR plumbs
through a configuration variable for this.
<!-- Describe the problem, what has changed, and motivation behind those
changes. Pretend you are advocating for this change and the reader is
skeptical. -->

charts/edge-site/Chart.yaml

@@ -13,6 +13,6 @@ type: application
 # 1.0.0-alpha.0
 # 1.0.0-alpha.1
 # 1.0.0
-version: "0.0.29"
+version: "0.0.30"
 
 appVersion: "65e83cd7ed9004d89c83e239a4c6fa8dbd4caa08"

charts/edge-site/templates/statefulset.yaml

@@ -75,6 +75,8 @@ spec:
                   key: token
                   optional: false
             {{- end }}
+            - name: PRIMARY_SITE_MODE
+              value: "{{ .Values.globals.upload.primarySiteMode }}"
             - name: DATABASE_CONNECTION_STRING
               value: sqlite://file:/data/index/foxglove.db?_journal_mode=WAL
             - name: STORAGE_ROOT

charts/edge-site/values.yaml

@@ -16,12 +16,17 @@ globals:
     ## For example: us-east-1
     region: ""
 
-  # This section configures where the deployment will upload files you wish to import into a primary site
+  # This section configures where the deployment will upload files you wish to import.
   upload:
-    # The cloud provider where the destination inbox bucket lives
-    # Values values: aws, azure, google_cloud
+    # Upload to either a Foxglove-hosted or self-managed primary site.
+    # Values: "self-managed", "hosted"
+    primarySiteMode: self-managed
+    # The cloud provider where the self-managed primary site inbox bucket lives. Ignored if
+    # `primarySiteMode` is set to `hosted`.
+    # Values: aws, azure, google_cloud
     provider:
-    # The bucket name where the deployment will send the requested files
+    # The self-managed primary site inbox bucket name. Ignored if `primarySiteMode` is set to
+    # `hosted`.
     bucketName:
 
 # Configuration for recording storage, defaults to the persistent volume configured by