Replaced os.Getenv("HOME") with go-homedir package in hosts folder

Replaced os.Getenv("HOME") with go-homedir package in hosts folder

Signed-off-by: Ruslan Gabitov <ruslan.gabitov@live.com>
Merge pull request #12 from MSOpenTech/host-management2

Replaced os.Getenv("HOME") with go-homedir package in hosts folder