Add admin operations and tests
Add ListSpaces and corresponding test cases
Remove useless lines in tests
Merge branch 'master' of github.com:derekchiang/hypergo
Add support for changing consistency level

Signed-off-by: Derek Chiang <derekchiang93@gmail.com>
Fixup language tests.
Merge branch 'master' of git://github.com/derekchiang/HyperDex

* 'master' of git://github.com/derekchiang/HyperDex:
  Remove useless lines in tests
  Add ListSpaces and corresponding test cases
  Add admin operations and tests
Merge branch 'add-change-consistency-level' of git://github.com/derekchiang/HyperDex

* 'add-change-consistency-level' of git://github.com/derekchiang/HyperDex:
  Add support for changing consistency level

Conflicts:
	admin/admin.cc
	admin/admin.h
	admin/c.cc
	include/hyperdex/admin.h