Fix sqs/sns case for aws sdk v2 parameter allowlist lookups (#373)

[humanzz]

Issue #, if available: #373

Description of changes:

• Fix sqs/sns case SQS -> Sqs, SNS -> Sns
• Refactor TracingInterceptorTest to
  • Make @Test cases come first
  • Move private utility methods to the end of the class
  • Extract utility methods to setup the clients for tests

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #374 (803b9f8) into master (8215450) will increase coverage by 0.13%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #374      +/-   ##
============================================
+ Coverage     58.12%   58.26%   +0.13%     
- Complexity     1269     1272       +3     
============================================
  Files           138      138              
  Lines          5247     5247              
  Branches        633      633              
============================================
+ Hits           3050     3057       +7     
+ Misses         1902     1894       -8     
- Partials        295      296       +1     

Impacted Files	Coverage Δ
...mazonaws/xray/interceptors/TracingInterceptor.java	63.34% <0.00%> (+3.16%)	⬆️

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[willarmiros]

lgtm! I also verified no other allowlisted services should need this change.