MDL-35089 conditionals: detected one place missing sectioncache

Thanks to MDL-34936 and unit tests this was discovered like 2 new
places calling to get_fast_modinfo() without the sectioncache
column contents. Potential performance problem, leading to
reseting and recalculation of caches all the time.

lib/conditionlib.php

@@ -767,7 +767,7 @@ public function get_full_information($modinfo=null) {
                 $course = $COURSE;
             } else {
                 $course = $DB->get_record('course', array('id' => $this->item->course),
-                        'id, enablecompletion, modinfo', MUST_EXIST);
+                        'id, enablecompletion, modinfo, sectioncache', MUST_EXIST);
             }
             foreach ($this->item->conditionscompletion as $cmid => $expectedcompletion) {
                 if (!$modinfo) {
@@ -929,7 +929,7 @@ public function is_available(&$information, $grabthelot=false, $userid=0, $modin
                 $course = $COURSE;
             } else {
                 $course = $DB->get_record('course', array('id' => $this->item->course),
-                        'id, enablecompletion, modinfo', MUST_EXIST);
+                        'id, enablecompletion, modinfo, sectioncache', MUST_EXIST);
             }
 
             $completion = new completion_info($course);