[MERGE] stable-2.16 to stable 2.17

['Brian Foley' via ganeti-devel]

commit 10e851b0af6d2f1c3bca6fccde9b8f3ce8c5dd92
Merge: 0b57a03 8bcf605
Author: Brian Foley <bpfo...@google.com>
Date:   Tue May 17 13:35:34 2016 +0100

    Merge branch 'stable-2.16' into stable-2.17
    
    * stable-2.16
      Fix LogicalVolume Attach failure on missing path
      Set USE_VERSION_FULL=no if --enable-versionfull=no
      Generate concatenated error strings in parser
      Make the TH fieldsDictsKeys more efficient
      Don't verify disks when all disk templates are ext
      Improve test coverage for block device creation
      Docstring for LUClusterVerifyGroup
      Fix broken parameters in storage create methods
      Implement localized cache for lvs commands
    
    * stable-2.15
      mcpu: Raise caught OpPrereqErrors with too few args
      Make EnsureDirs print chmod mode on errors
      Fix CLI option typo in NEWS file
    
    Signed-off-by: Brian Foley <bpfo...@google.com>