fix(e2e): delete elasticache resources in After call

[trivikr]

Issue

Refs: #3948

Description

Moves deletion of elasticache resources in After call

Testing

No easy way to simulate failed test. The After call was tested in #3948

Success case

$ aws elasticache describe-cache-parameter-groups | jq '.CacheParameterGroups[].CacheParameterGroupName | select(startswith("aws-js-sdk"))'

$ yarn run cucumber-js --fail-fast -t @elasticache                   
yarn run v1.22.19
$ /local/home/trivikr/workspace/aws-sdk-js-v3/node_modules/.bin/cucumber-js --fail-fast -t @elasticache
..............

2 scenarios (2 passed)
8 steps (8 passed)
0m00.345s (executing steps: 0m00.302s)
Done in 1.13s.

$ aws elasticache describe-cache-parameter-groups | jq '.CacheParameterGroups[].CacheParameterGroupName | select(startswith("aws-js-sdk"))'

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