Fix typo in calling is_the_current_page method

The method is_the_current_page in the is_login_page is not called, it is
only referenced.

Partially implements blueprint: selenium-integration-testing

Change-Id: I28530fe03288bc6b4d9f77b361b7e743b1c04c26
Merge "Fix typo in calling is_the_current_page method"