Land rapid7#7360, restore passive?/aggressive? behavior

This PR restores the mod.aggressive? and mod.passive? methods to the
implementation prior to 0f7e3e9.

Author: hdm

lib/msf/core/exploit.rb

@@ -649,14 +649,14 @@ def stance
   # Returns true if the exploit has an aggressive stance.
   #
   def aggressive?
-    (stance == Stance::Aggressive || stance.include?(Stance::Aggressive))
+    (stance == Stance::Aggressive)
   end
 
   #
   # Returns if the exploit has a passive stance.
   #
   def passive?
-    (stance == Stance::Passive || stance.include?(Stance::Passive))
+    (stance == Stance::Passive)
   end
 
   #

lib/msf/core/exploit/http/server.rb

@@ -73,7 +73,7 @@ def cli=(cli)
   end
 
   def print_prefix
-    if cli && (respond_to?(:aggressive) && !aggressive?)
+    if cli && !(stance == Stance::Aggressive || stance.include?(Stance::Aggressive))
       super + "#{cli.peerhost.ljust(16)} #{self.shortname} - "
     else
       super