do not create symlink if source doesn't exist

[kadel]

create symlink for /etc/kubernetes only if /host/etc/kubernetes exists, so we don't end up with invalid symlink

[vpavlin]

LGTM

[landscape-bot]

Code quality remained the same when pulling b3809f2 on kadel:fix-etc-kubernetes-symlink into 0c750d5 on projectatomic:master.

[landscape-bot]

Code quality remained the same when pulling b3809f2 on kadel:fix-etc-kubernetes-symlink into 0c750d5 on projectatomic:master.

[dustymabe]

Since this was opened against master branch we'll look at it more closely once the cdk branch is merged.

[dustymabe]

hey @kadel. This looks good except for one thing.. can you change the os.path.exists(kube_conf_path) to os.path.lexists. see the comment for more info: #193 (comment)

[dustymabe]

@kadel actually nevermind. Looks good like it is. If we never create the symlink in the first place (if the target doesn't exist) then there is no reason to use lexists().

[dustymabe]

will merge after beta branch is merged tomorrow.