API: Ensure config.servicePath works as an alias for `config.s…

[medikoo]

Some plugins override config.servicePath, and after recent changes this property is not read in Framework internalls.

This patch ensures that config.servicePath serves as live alias of serviceDir

[codecov]

Codecov Report

Merging #9343 (2349c54) into master (aa89357) will increase coverage by 0.00%.
The diff coverage is 80.00%.

❗ Current head 2349c54 differs from pull request most recent head fcf9a78. Consider uploading reports for the commit fcf9a78 to get more accurate results

@@           Coverage Diff           @@
##           master    #9343   +/-   ##
=======================================
  Coverage   86.94%   86.94%           
=======================================
  Files         316      316           
  Lines       11832    11833    +1     
=======================================
+ Hits        10287    10288    +1     
  Misses       1545     1545           

Impacted Files	Coverage Δ
lib/plugins/create/create.js	89.18% <ø> (-0.15%)	⬇️
lib/Serverless.js	91.30% <66.66%> (ø)
lib/classes/Config.js	100.00% <100.00%> (ø)

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[pgrzesik]

👍