[Feature] LoginAPI support token_expire field

[Thespica]

Feature Description (功能描述)

Client's login test was blocked by this problem, showing errer:

java.lang.AssertionError: 
Expected: a string containing "Incorrect username or password"
     but: was "Unrecognized field "token_expire" (class org.apache.hugegraph.api.auth.LoginAPI$JsonLogin), not marked as ignorable (2 known properties: "user_name", "user_password"])
 at [Source: (org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream); line: 1, column: 70] (through reference chain: org.apache.hugegraph.api.auth.LoginAPI$JsonLogin["token_expire"])"

CURRENT implementation(not only this method):
https://github.com/apache/incubator-hugegraph/blob/42f9a7638ba0d3d75744c69690938c4ca1074e56/hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/auth/LoginAPI.java#L61-L79

NEW implementation for refer(not only this method):