Add service config to leeroy-web deployment.yaml

[iandanforth-alation]

Fixes: #5629

Description
Adds a leeroy-web service of type NodePort to conform with the intent and instructions of the example README.md

User facing changes
Users will now see both a leeroy-web and a leeroy-app service when running the "microservices" example.

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[codecov]

Codecov Report

Merging #5630 (de8f5b9) into master (5757b03) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5630   +/-   ##
=======================================
  Coverage   70.71%   70.71%           
=======================================
  Files         408      408           
  Lines       15559    15559           
=======================================
  Hits        11002    11002           
  Misses       3750     3750           
  Partials      807      807           

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[iandanforth-alation]

@googlebot I signed it!

[MarlonGamez]

hey @iandanforth-alation, thanks for this change! I'll kick off the kokoro run and I think this should be good to merge once it goes green :)

[MarlonGamez]

lgtm, thanks for the contribution :)