Land rapid7#4765, Rails4 compatible finder conversion

* find_or_initialize_by_DYNAMIC

Author: shuckins-r7

lib/msf/core/db_manager/host.rb

@@ -166,9 +166,9 @@ def report_host(opts)
       end
 
       if opts[:comm] and opts[:comm].length > 0
-        host = wspace.hosts.find_or_initialize_by_address_and_comm(addr, opts[:comm])
+        host = wspace.hosts.where(address: addr, comm: opts[:comm]).first_or_initialize
       else
-        host = wspace.hosts.find_or_initialize_by_address(addr)
+        host = wspace.hosts.where(address: addr).first_or_initialize
       end
     else
       host = addr
@@ -257,9 +257,9 @@ def update_host_via_sysinfo(opts)
       end
 
       if opts[:comm] and opts[:comm].length > 0
-        host = wspace.hosts.find_or_initialize_by_address_and_comm(addr, opts[:comm])
+        host = wspace.hosts.where(address: addr, comm: opts[:comm]).first_or_initialize
       else
-        host = wspace.hosts.find_or_initialize_by_address(addr)
+        host = wspace.hosts.where(address: addr).first_or_initialize
       end
     else
       host = addr