fix outbound connection check for master VMSS

[CecileRobertMichon]

What this PR does / why we need it: Fix typo in master VMSS command causing failing outbound check.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

If applicable:

• documentation
• unit tests
• tested backward compatibility (ie. deploy with previous version, upgrade with this branch)

Release note:

[tariq1890]

/lgtm

[codecov]

Codecov Report

Merging #44 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #44   +/-   ##
=======================================
  Coverage   52.41%   52.41%           
=======================================
  Files          91       91           
  Lines       12792    12792           
=======================================
  Hits         6705     6705           
  Misses       5479     5479           
  Partials      608      608

[mboersma]

/lgtm

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CecileRobertMichon, mboersma, tariq1890

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