Adding additional failure conditions to sentry tracking. (#853)

* Adding additional failure conditions to sentry tracking.

* Removing sentry extension as a circular import.

lemur/common/schema.py

@@ -15,6 +15,8 @@ from sqlalchemy.orm.collections import InstrumentedList
 from inflection import camelize, underscore
 from marshmallow import Schema, post_dump, pre_load
 
+from lemur.extensions import sentry
+
 
 class LemurSchema(Schema):
     """
@@ -157,6 +159,7 @@ def validate_schema(input_schema, output_schema):
             try:
                 resp = f(*args, **kwargs)
             except Exception as e:
+                sentry.captureException()
                 current_app.logger.exception(e)
                 return dict(message=str(e)), 500