1. Support loading Priam properties in this order:

  a. SimpleDB
  b. Priam.properties in classpath
  c. Java's command line (-Da=b)
  d. Default value in PriamConfiguration.java

2. Also, fix a bug in loading CassandraProcessManager through Google Guice that we did not load it in the last check-in

3. Print out the cassandra launching script's output because checking the script's exit code is not enough to detect a failed start
   With this, the priam.log will tell the problem to help users.  Best way is to fix our code to detect.
checking a sample Priam.properties
Merge pull request #206 from timiblossom/1.1

1.1
Incrementing rev num
Incrementing rev num
Updating retriable count for creating new token
Merge pull request #212 from sagarl/1.1

Updating retriable count for creating new token
Updating log stmt
Merge pull request #217 from sagarl/1.1

Updating log stmt
Add jersey servlet to manipulate security group values. #223 on the github issues.