Merge pull request #195 from jasobrown/1.1

backporting PRIAM-193 to the 1.1 branch
Updating rev num
Merge remote-tracking branch 'origin/1.1' into 1.1
Updating rev num
porting NFSeedProvider cache change to 1.1
backporting fix for writing auth values to yaml
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
-Fill in some values for Priam.properites (pulled from the PriamConfiguration.java)
-Filter out command line properties that do not associate with Priam
Merge branch 'master' of https://github.com/Netflix/Priam

Conflicts:
	gradle.properties
	priam/src/main/java/com/netflix/priam/defaultimpl/PriamConfiguration.java
	priam/src/main/java/com/netflix/priam/defaultimpl/StandardTuner.java
fixed compile errors after merge