Rename base-url-behavior_test.html to .js

This change is required to keep history for Karma tests.

Change-Id: I0efdf85bfe05adc51fe17ca0b369523a7a6c4f6e
diff --git a/polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.html b/polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.js
similarity index 100%
rename from polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.html
rename to polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.js