zhufl 0419088f9d Replace the usage of 'os' with 'os_primary' ...

Read-only property 'os' has moved to 'os_primary' in version 'Pike'
and will be removed in version 'Queens', so this is to replace
the usage of 'os' with 'os_primary'.

Change-Id: I9f7c13da05a8c4a63529c11aa6213a7269abee6d

2017-05-23 10:45:48 +08:00

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Replace the usage of 'os' with 'os_primary'

2017-05-23 10:45:48 +08:00