exclude mapbox jasmine tests on CircleCI,

- as FF launched by karma can't create a webgl context on CircleCI.

Author: etpinard

test/jasmine/karma.ciconf.js

@@ -17,7 +17,9 @@ function func(config) {
     func.defaultConfig.exclude = [
         'tests/gl_plot_interact_test.js',
         'tests/gl_plot_interact_basic_test.js',
-        'tests/gl2d_scatterplot_contour_test.js'
+        'tests/gl2d_scatterplot_contour_test.js',
+        'tests/mapbox_test.js',
+        'tests/scattermapbox_test.js'
     ];
 
     // if true, Karma captures browsers, runs the tests and exits