Update bucket name and key prefix defaults

Author: santiagocardenas

templates/git2s3.template

@@ -118,14 +118,14 @@
         "QSS3BucketName": {
             "AllowedPattern": "^[0-9a-zA-Z]+([0-9a-zA-Z-]*[0-9a-zA-Z])*$",
             "ConstraintDescription": "Quick Start bucket name can include numbers, lowercase letters, uppercase letters, and hyphens (-). It cannot start or end with a hyphen (-).",
-            "Default": "quickstart-reference",
+            "Default": "aws-quickstart",
             "Description": "S3 bucket name for the Quick Start assets. Quick Start bucket name can include numbers, lowercase letters, uppercase letters, and hyphens (-). It cannot start or end with a hyphen (-).",
             "Type": "String"
         },
         "QSS3KeyPrefix": {
             "AllowedPattern": "^[0-9a-zA-Z-/]*$",
             "ConstraintDescription": "Quick Start key prefix can include numbers, lowercase letters, uppercase letters, hyphens (-), and forward slash (/).",
-            "Default": "git2s3/latest/",
+            "Default": "quickstart-git2s3/",
             "Description": "S3 key prefix for the Quick Start assets. Quick Start key prefix can include numbers, lowercase letters, uppercase letters, hyphens (-), and forward slash (/).",
             "Type": "String"
         }
@@ -1552,4 +1552,4 @@
             }
         }
     }
-}
+}