Release version 1.6

Features:

* Existing domain authorizations will be re-used within the period that they are valid. For small changes to domain lists this results in huge speed improvements and higher reliability.
* TXT records will be removed again after challenges have been completed to avoid having "zombie"-records hanging around

Fixes:

* An issue was fixed that could result in unstructured log messages being printed when running on GCP
* The default wait time before validating challenges with Google Cloud DNS has been increased to avoid a persistent issue with DNS-consistency (#14)

In addition some maintenance work has been performed on the codebase (style fixes and dependency bumps).

letsencrypt-controller.yaml

@@ -14,6 +14,5 @@ spec:
         iam.amazonaws.com/role: "letsencrypt-controller"
     spec:
       containers:
-        - image: tazjin/letsencrypt-controller:1.6-SNAPSHOT
-          imagePullPolicy: Always
+        - image: tazjin/letsencrypt-controller:1.6
           name: letsencrypt-controller

pom.xml

@@ -6,7 +6,7 @@
 
   <artifactId>letsencrypt-controller</artifactId>
   <groupId>in.tazj.k8s</groupId>
-  <version>1.6-SNAPSHOT</version>
+  <version>1.6</version>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>