Actually use TachyonConf to replace CommonConf and MasterConf. Fix unit test for TachyonConf for boolean and bytes.
Fix TachyonConfTest for default journal path
Fix unit tests.
Move String constants from TachyonConf to Constants class. Some fixes to move CommonConf and MasterConf to use TachyonConf for secure HDFS.
Remove some unneeded new TachyonConf() calls. Replace rest of MasterConf.get call with TachyonConf.
Remove MasterConf class since it is no longer referenced in the code.
Address review comments:
-) Move creation of TachyonConf as early as possible.
-) Resolve unit tests to test
-) Remove set and get system properties for master configurations.
-) Set private variable of TachyonConf to final if possible.
Fix some formatting. Move the TachyonConf information from MasterInfo to Dependency.loadImage as review.
Merge pull request #551 from hsaputra/move_to_neo_tachyon_conf

[WIP] TACHYON-8 TACHYON-194 Move some MasterConf and CommonConf usages to use TachyonConf