Update lti.properties so the correct defaults can be set by the bbb-lti package

bbb-lti/grails-app/conf/lti.properties

@@ -23,7 +23,7 @@
 # This URL is where the BBB client is accessible. 
 bigbluebuttonURL=http://localhost/bigbluebutton
 # Salt which is used by 3rd-party apps to authenticate api calls
-bigbluebuttonSalt=bbb_secret
+bigbluebuttonSalt=bbb_salt
 
 # LTI basic information
 #----------------------------------------------------
@@ -31,7 +31,7 @@ bigbluebuttonSalt=bbb_secret
 ltiEndPoint=http://localhost/lti/tool.xml
 # The list of consumers allowed to access this lti service.
 # Format: [consumerId:sharedSecret]
-ltiConsumers=bbb:bbb_secret
+ltiConsumers=bbb:lti_secret
 
 #----------------------------------------------------
 # Inject configuration values into BigbluebuttonSrvice beans