[sheepdog] sheepdog stable release v0.8.2_rc1

[Hitoshi Mitake]

Hi sheepdog users and developers,

I released v0.8.2_rc1 of stable branch. You can download a source
archive from these URLs:
tar.gz: https://github.com/sheepdog/sheepdog/archive/v0.8.2_rc1.tar.gz
zip: https://github.com/sheepdog/sheepdog/archive/v0.8.2_rc1.zip

Main topics of this release are:
 - logger enhancements
 -- reduce amount of logs produced by auto recovery
 -- bugfix for correct exit
 - stop VDI ID recycling, which can cause disk corruption
 - bugfix for the store format updating mechanism
 - bugfix for packaging
 -- previous configure script couldn't work with extra options e.g. --enable-zookeeper

If you want to update your existing v0.8.0 or v0.8.1 cluster, you need
to launch sheep with -u option.

If no one disagrees about this release candidate in 2 days, it will be
v0.8.2 officially.

Below is the summary of the commits backported after rc0:

Hitoshi Mitake (5):
      sheep: don't recycle VDI ID
      tests/functional: update output of 086
      tests/functional: fix test results broken by the new VID rule
      configure: correct a variable name for configure option
      sheep: save updated config after version migration

Robin Dong (1):
      dog: fix compile warning

Ruoyu (3):
      sheepfs/http: fix variable uninitialized in curl_get_object_size
      sheep/recovery: fix floating point error
      lib/logger: nonblocking waitpid to avoid sheep process cannot exit

Saeki Masaki (1):
      sheep: reduce auto recovery log

Thanks,
Hitoshi