fix: update CSE moby version substring match

[jackfrancis]

Reason for Change:

Follow-up from #2613. Now that we are delivering a +azure suffix w/ the internal Azure builds moby, we need to strip that from the version substring fetcher in CSE.

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[jackfrancis]

@cpuguy83 FYI, should have caught this in the PR review

[codecov]

Codecov Report

Merging #2662 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2662   +/-   ##
=======================================
  Coverage   71.75%   71.75%           
=======================================
  Files         134      134           
  Lines       25056    25056           
=======================================
  Hits        17978    17978           
  Misses       6023     6023           
  Partials     1055     1055

[mboersma]

/lgtm

[acs-bot]

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