add ami to initialisms (#165)

Issue #, if available: N/A

Description of changes:
* Add `ami` entry to initialisms with test

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

Author: brycahta

pkg/names/names.go

@@ -68,6 +68,7 @@ var (
 		// Prevent "MultipartUpload" from becoming "MultIPartUpload"
 		{"Ip", "IP", "ip", regexp.MustCompile("Ip(?!art)", regexp.None)},
 		// Easy find-and-replacements...
+		{"Ami", "AMI", "ami", nil},
 		{"Acl", "ACL", "acl", nil},
 		{"Acp", "ACP", "acp", nil},
 		{"Api", "API", "api", nil},

pkg/names/names_test.go

@@ -31,6 +31,7 @@ func TestNames(t *testing.T) {
 		expectCamelLower string
 		expectSnake      string
 	}{
+		{"Ami", "AMI", "ami", "ami"},
 		{"Identifier", "Identifier", "identifier", "identifier"},
 		{"Id", "ID", "id", "id"},
 		{"ID", "ID", "id", "id"},