`ALTER CHANGE STREAMS name SET FOR ...` statements not supported

[gion-pop]

Expected Behavior

Create/migration contains ALTER CHANGE STREAMS name SET FOR ... should succeed as per Spanner DDL docs

Current Behavior

Fails with errors like:

Error command: create, version: v1.5.0
    Failed to execute the operation to Cloud Spanner, schema.sql:9: got "\"FOR\"", expected OPTIONS

Steps to Reproduce

1. Prepare file schema.sql, contents is below:

   
   CREATE TABLE User (
   ID STRING(MAX) NOT NULL,
   Name STRING(MAX) NOT NULL,
   Age INT64 NOT NULL
   ) PRIMARY KEY(ID);

CREATE CHANGE STREAM UserStream FOR User(Name);

ALTER CHANGE STREAM UserStream SET FOR User(Name, Age);

2. Run `wrench create`

## Context (Environment)

* wrench version: 1.5.0

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