Use Title as name in any inline model defined (when title is defined)

[dmytrobr]

Description

Feature has been introduced to support "title" as model name:
#2868

However it has not been applied to some type of inline models (inline models defined within MapProperty and ArrayProperty. I see it as a bug in the feature introduced with Issue-2868.

Swagger-codegen version

2.2.1-SNAPSHOT

Swagger declaration file content or url

```java
   @Test
public void resolveInlineArrayModelWithTitle() throws Exception {
    Swagger swagger = new Swagger();

    swagger.addDefinition("User", new ArrayModel()
            .items(new ObjectProperty()
                    .title("InnerUserTitle")
                    ._default("default")
                    .access("access")
                    .readOnly(false)
                    .required(true)
                    .description("description")
                    .name("name")
                    .property("street", new StringProperty())
                    .property("city", new StringProperty())));

    new InlineModelResolver().flatten(swagger);

    Model model = swagger.getDefinitions().get("User");
    assertTrue(model instanceof ArrayModel);

    Model user = swagger.getDefinitions().get("InnerUserTitle");
    assertNotNull(user);
    assertEquals("description", user.getDescription());
}

'''

Command line used for generation

Used Maven plugin to generate Java client

Steps to reproduce

See Unit Test above

Related issues

Issue-2868.

Suggest a Fix

I'm submitting pull request to fix this

[wing328]

PR meged. Thanks for the contribution.