Making the "I trigger the cron" behat step, reset the cron

This way the cron can be triggered multiple times in the same scenario

Change-Id: I8448f93d097bef3ec0845d4efa29d491c6033428

htdocs/testing/frameworks/behat/classes/BehatGeneral.php

@@ -779,11 +779,18 @@ class BehatGeneral extends BehatBase {
     }
 
     /**
-     * This step triggers cron like a user would do going to lib/cron.php.
+     * This step triggers the cron, through the web interface.
      *
-     * @Given /^I trigger cron$/
+     * It resets the "nextrun" on every cron task, so every cron task will run
+     * every time this step is used.
+     *
+     * @Given /^I trigger (the )?cron$/
      */
     public function i_trigger_cron() {
+        set_field('cron', 'nextrun', null);
+        foreach(plugin_types() as $plugintype) {
+            set_field($plugintype . '_cron', 'nextrun', null);
+        }
         $this->getSession()->visit($this->locate_path('/lib/cron.php'));
     }
 

test/behat/features/account/loginattempts.feature

@@ -24,7 +24,7 @@ Then I should see "You have exceeded the maximum login attempts."
 And I should see "Login"
 
 # The cron should reset the limit, allowing me to log in again
-When I trigger cron
+When I trigger the cron
 And I log in as "userA" with password "Password1"
 # I'm logged in!
 Then I should see "Dashboard"