[TIMOB-17564] Crittercism: Add support for Customizing the Version Name

Feature Request

To expose setCustomVersionName Crittercism method since customer would like to be able to customise version name for the performance management section of our Platform.

Android docs

This configuration option allows you to customize the app version diagnostic that is reported to Crittercism. It will allow you to filter crashes, handled exceptions, app loads, and service monitoring data by a custom app version, and this version will appear in the Proguard mapping upload page of the website. For library versions 3.1.4 and above, use an instance of CrittercismConfig as shown in the following code example:

import com.crittercism.app.Crittercism;
import com.crittercism.app.CrittercismConfig;

import android.os.Bundle;

@Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // create the CrittercismConfig instance.
    CrittercismConfig config = new CrittercismConfig();
    String myCustomVersionName = "My Custom Version Name";
    // set the custom version name.
    config.setCustomVersionName(myCustomVersionName);
    // initialize.
    Crittercism.initialize(getApplicationContext(),
        "<CRITTERCISM_APP_ID>", crittercismConfig);
}

- http://docs.crittercism.com/android/android.html#setting-advanced-crittercism-options