Add billing enabled and sales email to Helm chart and /settings API endpoint (#1873)

Backend work for first two tasks of
https://github.com/webrecorder/browsertrix/issues/1875

New /billing API endpoint to be added separately once we have a better
idea of what data we can get from the payment processor.

backend/btrixcloud/main.py

@@ -68,6 +68,8 @@ def main():
         ),
         "maxPagesPerCrawl": int(os.environ.get("MAX_PAGES_PER_CRAWL", 0)),
         "maxScale": int(os.environ.get("MAX_CRAWL_SCALE", 3)),
+        "billingEnabled": is_bool(os.environ.get("BILLING_ENABLED")),
+        "salesEmail": os.environ.get("SALES_EMAIL"),
     }
 
     invites = init_invites(mdb, email)

backend/test/test_settings.py

@@ -16,4 +16,6 @@ def test_settings():
         "maxPagesPerCrawl": 4,
         "maxScale": 3,
         "defaultPageLoadTimeSeconds": 120,
+        "billingEnabled": False,
+        "salesEmail": "sales@webrecorder.org",
     }

chart/templates/configmap.yaml

@@ -58,6 +58,10 @@ data:
 
   MAX_CRAWLER_MEMORY: "{{ .Values.max_crawler_memory }}"
 
+  BILLING_ENABLED: "{{ .Values.billing_enabled }}"
+
+  SALES_EMAIL: "{{ .Values.sales_email }}"
+
 ---
 apiVersion: v1
 kind: ConfigMap

chart/values.yaml

@@ -110,6 +110,9 @@ job_memory: "70Mi"
 
 profile_browser_idle_seconds: 60
 
+billing_enabled: false
+sales_email: "sales@webrecorder.org"
+
 # if set, print last 'log_failed_crawl_lines' of each failed
 # crawl pod to backend operator stdout
 # mostly intended for debugging / testing