add: endpoint /tags

fix: leaks from config (now using static length for config strings)

tests/tavern_utils/validate_tag.py

@@ -0,0 +1,34 @@
+import json
+
+def _verify_single(tag):
+    assert isinstance(tag, str), "tag is not a string"
+
+def single(response):
+    _verify_single(response.json())
+
+def multiple(response):
+    assert isinstance(response.json(), list), "response is not a list"
+    for tag in response.json():
+        _verify_single(tag)
+
+#def find(response, name=None, number=None, controller_id=None, tag=None):
+#    print(response.json())
+#    for tag in response.json():
+#        if number != None and number != tag.get("number"):
+#            continue
+#
+#        if name != None and name != tag.get("name"):
+#            continue
+#
+#        if controller_id != None and controller_id != tag.get("controller_id"):
+#            continue
+#
+#        if tag != None:
+#            found_in_response = False
+#            for response_tag in tag.get("tags"):
+#                if response_tag == tag:
+#                    found_in_response = True
+#            if not found_in_response:
+#                continue
+#        return
+#    assert False, "tag not found in list"