change the token separator space to dot

[XJangel]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change
/kind bug
/kind cleanup
/kind design
/kind documentation
/kind test
/kind failing-test
/kind feature

/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #
command line parsing error when using parameter token

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[kubeedge-bot]

Welcome @XJangel! It looks like this is your first PR to kubeedge/kubeedge 🎉

[kevin-wangzefeng]

/approve
/assign @fisherxu

[kubeedge-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kevin-wangzefeng

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[fisherxu]

Thanks for the fix, please see the comments :) @XJangel

[fisherxu]

/lgtm