add flavor support and re-organzied var_dicts

Re-organize the first level dict value in var_dict to a new searchlist
for cheetah template.

Change-Id: I584594509abc82c11302ca6db577769ab3df8db4

compass/utils/setting_wrapper.py

@@ -26,7 +26,10 @@ import os.path
 # default setting
 CONFIG_DIR = '/etc/compass'
 SQLALCHEMY_DATABASE_URI = 'sqlite://'
-INSTALLATION_LOGDIR = ''
+INSTALLATION_LOGDIR = {
+    'CobblerInstaller': '/var/log/cobbler/anamon',
+    'ChefInstaller': '/var/log/chef'
+}
 DEFAULT_LOGLEVEL = 'debug'
 DEFAULT_LOGDIR = '/tmp'
 DEFAULT_LOGINTERVAL = 1