fix(openshift): default RIPTIDE_ENV to 'dev' instead of 'unknown' sentinel (#56)

Align with noergler, which just defaults to 'dev' when the env var isn't
set rather than carrying a loud sentinel.

Author: trick77

openshift/collector/configmap-app.yaml

@@ -4,10 +4,7 @@ metadata:
   name: riptide-collector-app
 data:
   RIPTIDE_LOG_LEVEL: "INFO"
-  # Stamped on every log record as `env`. Each overlay MUST patch this to
-  # the real environment ("intg" / "prod"). The "unknown" sentinel makes a
-  # missing patch loud at first glance in Splunk rather than mis-tagging.
-  RIPTIDE_ENV: "unknown"
+  RIPTIDE_ENV: "dev"
   RIPTIDE_CONFIG_PATH: "/etc/riptide-collector/riptide.json"
   RIPTIDE_TEAM_KEYS_PATH: "/etc/riptide-collector-team-keys/team-keys.json"
   RIPTIDE_CONFIG_RELOAD_SECONDS: "30"