Return credit status error if no provider info found.

Return credit status error if no provider info found in provider info by
id dict. Also add logs to get an idea what is in this dict.

LEARNER-6643

common/djangoapps/student/views/dashboard.py

@@ -510,6 +510,14 @@ def _credit_statuses(user, course_enrollments):
                 status["provider_status_url"] = provider_info.get("status_url")
                 status["provider_id"] = provider_id
 
+                if not status["provider_name"] and not status["provider_status_url"]:
+                    status["error"] = True
+                    log.error(
+                        u"Could not find credit provider info for [%s] in [%s]. The user will not "
+                        u"be able to see his or her credit request status on the student dashboard.",
+                        provider_id, provider_info_by_id
+                    )
+
         statuses[course_key] = status
 
     return statuses

openedx/core/djangoapps/credit/models.py

@@ -184,8 +184,6 @@ class CreditProvider(TimeStampedModel):
             ]
 
             cache.set(cls.CREDIT_PROVIDERS_CACHE_KEY, credit_providers)
-        else:
-            log.info(u"Found %d credit providers from cache.", len(credit_providers))
 
         if providers_list:
             credit_providers = [provider for provider in credit_providers if provider['id'] in providers_list]