Allow colons in policy name

[sdejong629]

Description

Policy names are not allowed to contain a colon (:) in the name. This is allowed by the Minio webinterface and is used by SSO to reference claims.

Steps to Reproduce

1. Add a policy resource

resource "minio_iam_policy" "test" {
  name = "urn:test:bucketname"
  policy= <<EOF
{
  "Version":"2012-10-17",
  "Statement": [
    {
      "Sid":"ListAllBucket",
      "Effect": "Allow",
      "Action": ["s3:PutObject"],
      "Principal":"*",
      "Resource": "arn:aws:s3:::*/*"
    }
  ]
}
EOF
}

2. Run a terraform plan
3. Results in error:

Error: "name" must match [\w+=,.@-]
│
│   with minio_iam_policy.test,

Expected behavior:
The resource should be created with the use of colons

Actual behavior:
The policy resource is not created, but the error occurs

Reproduces how often: 100%

Versions

1.17.1

Additional Information

Minio allows the creation of policies using the colon in the web interface. Not really sure why this limitation has been put in the terraform module.

[felladrin]

I think this rule was based on these lines from terraform-provider-aws.
But I couldn't find any reference to this rule on the minio repository, so I'm willing to approve the change.

[felladrin]

Thanks for bringing it up, @sdejong629! And congrats for your first contribution to this repo! 🎉