Incompatible algorithms for checking the BackoffRate value in statelint and VSCode AWS toolkit plugin

[ghost]

For statelint 1 is an invalid BackoffRate value (must be 1.0), but for VSCode AWS toolkit plugin 1 is OK:

[timbray]

The thing to do is to see what the actual service accepts (don't know off the top of my head) and make it consistent with that.

[wong-a]

The service accepts both "BackOffRate": 1.0 and "BackOffRate": 1.

The spec only requires that the value be a number:

a field named "BackoffRate", a number which is the multiplier that increases the retry interval on each attempt (default: 2.0). The value of BackoffRate MUST be greater than or equal to 1.0.

[timbray]

The service accepts both "BackOffRate": 1.0 and "BackOffRate": 1.

The spec only requires that the value be a number:

a field named "BackoffRate", a number which is the multiplier that increases the retry interval on each attempt (default: 2.0). The value of BackoffRate MUST be greater than or equal to 1.0.

OK, so statelint is wrong, the .j2119 says it has to be a float. Easy fix.