[Issue 6507][deployment]fix k8s config and env py (#6508)

* fix k8s config and env py

* fix BOOKIE_MEN parmater for k8s
diff --git a/docker/pulsar/scripts/apply-config-from-env.py b/docker/pulsar/scripts/apply-config-from-env.py
index 92f5554..d37406d 100755
--- a/docker/pulsar/scripts/apply-config-from-env.py
+++ b/docker/pulsar/scripts/apply-config-from-env.py
@@ -53,6 +53,8 @@
     # Update values from Env
     for k in sorted(os.environ.keys()):
         v = os.environ[k]
+        if k.startswith(PF_ENV_PREFIX):
+            k = k[len(PF_ENV_PREFIX):]
         if k in keys:
             print('[%s] Applying config %s = %s' % (conf_filename, k, v))
             idx = keys[k]