*: cut 2.7.0-rc.0 (#5114)

Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>

CHANGELOG.md

@@ -1,3 +1,23 @@
+## 2.7.0-rc.0 / 2019-01-18
+
+This release adds experimental support for disk size based retention. To accomodate that we are deprecating the flag `storage.tsdb.retention` in favour of `storage.tsdb.retention.time`. We print a warning if the flag is in use, but it will function without breaking until Prometheus 3.0.
+
+* [FEATURE] Add subqueries to PromQL. #4831
+* [FEATURE] [EXPERIMENTAL] Add support for disk size based retention. Note that we don't consider the WAL size which could be significant and the time based retention policy also applies. #5109 prometheus/tsdb#343
+* [FEATURE] Add CORS origin flag. #5011
+* [ENHANCEMENT] Consul SD: Add tagged address to the discovery metadata. #5001
+* [ENHANCEMENT] Kubernetes SD: Add service external IP and external name to the discovery metadata. #4940
+* [ENHANCEMENT] Azure SD: Add support for Managed Identity authentication. #4590
+* [ENHANCEMENT] Azure SD: Add tenant and subscription IDs to the discovery metadata. #4969
+* [ENHANCEMENT] OpenStack SD: Add support for application credentials based authentication. #4968
+* [ENHANCEMENT] Add metric for number of rule groups loaded. #5090
+* [BUGFIX] Avoid duplicate tests for alert unit tests. #4964
+* [BUGFIX] Don't depend on given order when comparing samples in alert unit testing. #5049
+* [BUGFIX] Make sure the retention period doesn't overflow. #5112
+* [BUGFIX] Make sure the blocks don't get very large. #5112
+* [BUGFIX] Don't generate blocks with no samples. prometheus/tsdb#374
+* [BUGFIX] Reintroduce metric for WAL corruptions. prometheus/tsdb#473
+
 ## 2.6.1 / 2019-01-15
 
 * [BUGFIX] Azure SD: Fix discovery getting stuck sometimes. #5088

VERSION

@@ -1 +1 @@
-2.6.1
+2.7.0-rc.0