Draft: Add InjectedIdentity for AWS Provider

[s4rd1nh4]

Initial work for InjectedIdentity with IRSA. #293

TODO:

• Add default credential chain logic using aws-sdk-go - https://registry.terraform.io/providers/hashicorp/aws/latest/docs#authentication-and-configuration
• Allow annotate serviceaccount created by terraform-controller - ex. tf-executor-service-account
• Implement tests

[codecov]

Codecov Report

Merging #294 (2c449f2) into master (3b4fde8) will increase coverage by 0.26%.
The diff coverage is 96.29%.

@@            Coverage Diff             @@
##           master     #294      +/-   ##
==========================================
+ Coverage   81.84%   82.10%   +0.26%     
==========================================
  Files          19       19              
  Lines        1333     1358      +25     
==========================================
+ Hits         1091     1115      +24     
- Misses        174      175       +1     
  Partials       68       68              

Flag	Coverage Δ
unit	82.10% <96.29%> (+0.26%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
controllers/provider/credentials.go	91.83% <80.00%> (-0.64%)	⬇️
controllers/configuration_controller.go	77.23% <100.00%> (ø)
controllers/provider/aws.go	100.00% <100.00%> (ø)
controllers/rbac.go	91.13% <100.00%> (+0.47%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3b4fde8...2c449f2. Read the comment docs.