Added LogDir to agent conf, upgrade steps

upgrades/steps118.go

Index: upgrades/steps118.go
=== modified file 'upgrades/steps118.go'
--- upgrades/steps118.go	2014-02-26 04:16:58 +0000
+++ upgrades/steps118.go	2014-02-26 09:10:07 +0000
@@ -21,5 +21,10 @@
 			targets:     []Target{HostMachine},
 			run:         upgradeHostMachineRsyslogConfig,
 		},
+		&upgradeStep{
+			description: "upgrade agent conf to include log dir",
+			targets:     []Target{AllMachines},
+			run:         upgradeAllMachinesAgentConfLogDir,
+		},
 	}
 }