Update normalize function to put in state file full certificate data instead of hash

[rdublenych]

The current behaviour of the resource is to put a hash of certificate data (private key, certificate body, chain code) in the state file.
It causes an error because the provider sends these hashes of unmodified fields instead of source data on resource update.

Community Note

• Please vote on this pull request by adding a 👍 reaction to the original pull request comment to help the community and maintainers prioritize this request
• Please do not leave "+1" comments, they generate extra noise for pull request followers and do not help prioritize the request

Closes hashicorp#10847.
Also, may fix hashicorp#9809.

Release note for CHANGELOG:

NONE

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'
go test ./... -timeout=30s -parallel=4
?       github.com/terraform-providers/terraform-provider-aws   [no test files]
ok      github.com/terraform-providers/terraform-provider-aws/aws       18.835s
ok      github.com/terraform-providers/terraform-provider-aws/aws/internal/flatmap      (cached)
ok      github.com/terraform-providers/terraform-provider-aws/aws/internal/keyvaluetags (cached)
...

Test cases:

Update imported certificate

1. import new certificate by using acm_certificate resource
2. update certificate_body field
3. update imported certificate

current version

Error: Error updating certificate: ValidationException: com.amazonaws.pki.acm.exceptions.external.ValidationException: Could not validate the certificate with the certificate chain.

result: imported certificate was not updated.

fixed version (pr)

Apply complete
result: imported certificate was updated successfully.