As information icon says:
The Android resource name of the text field within your app where the given username should be entered.
AND Android Resources documentations says:
<resource name> is either the resource filename without the extension or the android:name attribute value in the XML element (for simple values).
So in your case editTextLogin will go in that field.
I would like to share my case as it is quite different than normal sign-in:
It is quite similar to Google sign-in. I am asking for username first and after validating it, on next fragment I am showing his/her name and designation and asking for password.
For above scenario I used two fragments. In Username fragment I kept one EditText with resource name username and next Button with resource name login and in other fragment (Password fragment) I used EditText with resource name password and again one Button with resource name login.
And this is how I provided my credentials:

Example Username field:
<android.support.v7.widget.AppCompatEditText
android:id="@+id/username"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Example Password field:
<android.support.v7.widget.AppCompatEditText
android:id="@+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword" />
Example Login button:
<android.support.v7.widget.AppCompatButton
android:id="@+id/login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp" />
EDIT
Reference of new Google Play Store console
