test-all-policy: Do not load nodes-experimental/manager.zeek

Turns out loading this script in non-cluster mode uses Cluster::log()
and creates cluster.log in the external baselines saying "cluster
started". Do not load it into test-all-policy.zeek and instead rely
on the new test-all-policy-cluster.test to load it transitively
when running as manager for basic checking.

scripts/test-all-policy.zeek

@@ -12,7 +12,10 @@
 # @load frameworks/control/controllee.zeek
 # @load frameworks/control/controller.zeek
 @load frameworks/cluster/experimental.zeek
-@load frameworks/cluster/nodes-experimental/manager.zeek
+# Loaded via the above through test-all-policy-cluster.test
+# when running as a manager, creates cluster.log entries
+# even in non-cluster mode if loaded like the below.
+# @load frameworks/cluster/nodes-experimental/manager.zeek
 @load frameworks/management/agent/__load__.zeek
 @load frameworks/management/agent/api.zeek
 @load frameworks/management/agent/boot.zeek

scripts/zeekygen/__load__.zeek

@@ -3,6 +3,7 @@
 # Scripts which are commented out in test-all-policy.zeek.
 @load protocols/mqtt/__load__.zeek
 @load protocols/ssl/decryption.zeek
+@load frameworks/cluster/nodes-experimental/manager.zeek
 @load frameworks/control/controllee.zeek
 @load frameworks/control/controller.zeek
 @load frameworks/management/agent/main.zeek