Add update and get-by-tag for schedules

tests/tavern_tests/2.1.schedules_protected.tavern.yaml

@@ -27,6 +27,7 @@ stages:
       periods:
         - start: "00:10"
           end: "00:20"
+      tags: []
   response:
     status_code: 200
     verify_response_with:
@@ -62,6 +63,7 @@ stages:
       periods:
       - start: "16:10"
         end: "17:20"
+      tags: []
   response:
     status_code: 200
     verify_response_with:

tests/tavern_utils/validate_schedule.py

@@ -23,7 +23,8 @@ def multiple(response):
         _verify_single(schedule)
 
 def check_name(response, name):
-    assert response.json().get("name") == name, "schedule name check failed"
+    response_name = response.json().get("name")
+    assert response_name == name, f"schedule name check failed (expected: '{name}'; actual: '{response_name}')"
 
 def check_id(response, id):
     assert response.json().get("id") == id, "schedule id check failed"
@@ -57,7 +58,7 @@ def compare_on(response):
     assert response.json().get("id") == "on", "schedule on did not return id on"
     assert len(response.json().get("periods")) == 1, "schedule on has unexpected amount of periods"
     assert response.json().get("periods")[0].get("start") == "00:00", "Schedule on has unexpected start"
-    assert response.json().get("periods")[0].get("end") == "23:59", "Schedule on has unexpected start"
+    assert response.json().get("periods")[0].get("end") == "00:00", "Schedule on has unexpected start"
 
 def find(response, id=None, name=None, periods=None, tag=None):
     if periods != None: