Bugfix - prevents AWS API failure to remove endpoints

Due to recent inconsistency in AWS API canonical hosted zone id for endpoints could not be detected, which led to the endpoint being removed. This release fixes the issue by aborting the record creation flow if such case detected

Fixes the bug for empty TXT record

Fixes the bug in #87

v0.6.0

Features

1. Support ingress IP address in ingress on AWS Route53. Allows to use ingress controllers populating node IP in the ingress object
2. Bug fix for record processing when canonical hosted zone is not found #77
3. Support annotation selector - #84
4. Deterministic approach on two resources requesting same DNS name #71

Fix for AWS hosted zones

Fixes the bug in creating a record in the best matching hosted zone in AWS Route53