Make ALB event path optional

[jinhong-]

Closes: #8568

ALB event path should have been optional. However omission of the path would result in a failure in deployment. This PR addresses the issue by excluding the path when it is not set

[codecov-io]

Codecov Report

Merging #8571 (bb3af29) into master (8545268) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #8571      +/-   ##
==========================================
+ Coverage   86.93%   86.94%   +0.01%     
==========================================
  Files         254      252       -2     
  Lines        9518     9515       -3     
==========================================
- Hits         8274     8273       -1     
+ Misses       1244     1242       -2     

Impacted Files	Coverage Δ
...ib/plugins/aws/package/compile/events/alb/index.js	100.00% <ø> (ø)
...ws/package/compile/events/alb/lib/listenerRules.js	84.61% <100.00%> (+0.83%)	⬆️
...ins/aws/package/compile/events/alb/lib/validate.js	95.71% <100.00%> (+0.40%)	⬆️
lib/plugins/standalone/index.js	40.00% <0.00%> (-1.03%)	⬇️
lib/utils/fs/readFileIfExists.js
lib/utils/getTrackingConfigFileName.js

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[medikoo]

@jinhong- Great thanks for this PR! Still before I review, let's first agree on right solution in the issue (I've posted the comment there)

[medikoo]

@jinhong- Thank you! It looks very good.

Still we've taken a new better approach to testing in last months, and all new tests should follow that. Please check my comment, and let me know if anything is not clear enough

[jinhong-]

@medikoo Reverted old tests and updated new tests

[medikoo]

Thank you @jinhong- Looks good, I've just proposed few organization improvements

[medikoo]

Thank you @jinhong- ! It looks very good. I've proposed just few last improvements

[medikoo]

Thank you @jinhong- ! It looks great, let's just improve error code

[medikoo]

Thank you @jinhong- !

[jinhong-]

Thank you @jinhong- !

You're most welcome :)