Lazy upgrade of the Spilo image (#859)

* initial implementation

* describe forcing the rolling upgrade

* make parameter name more descriptive

* add missing pieces

* address review

* address review

* fix bug in e2e tests

* fix cluster name label in e2e test

* raise test timeout

* load spilo test image

* use available spilo image

* delete replica pod for lazy update test

* fix e2e

* fix e2e with a vengeance

* lets wait for another 30m

* print pod name in error msg

* print pod name in error msg 2

* raise timeout, comment other tests

* subsequent updates of config

* add comma

* fix e2e test

* run unit tests before e2e

* remove conflicting dependency

* Revert "remove conflicting dependency"

This reverts commit 65fc09054b.

* improve cdp build

* dont run unit before e2e tests

* Revert "improve cdp build"

This reverts commit e2a8fa12aa.

Co-authored-by: Sergey Dudoladov <sergey.dudoladov@zalando.de>
Co-authored-by: Felix Kunde <felix-kunde@gmx.de>

charts/postgres-operator/crds/operatorconfigurations.yaml

@@ -62,6 +62,8 @@ spec:
               type: string
             enable_crd_validation:
               type: boolean
+            enable_lazy_spilo_upgrade:
+              type: boolean
             enable_shm_volume:
               type: boolean
             etcd_host:

charts/postgres-operator/values-crd.yaml

@@ -19,6 +19,8 @@ configTarget: "OperatorConfigurationCRD"
 configGeneral:
   # choose if deployment creates/updates CRDs with OpenAPIV3Validation
   enable_crd_validation: true
+  # update only the statefulsets without immediately doing the rolling update
+  enable_lazy_spilo_upgrade: false
   # start any new database pod without limitations on shm memory
   enable_shm_volume: true
   # etcd connection string for Patroni. Empty uses K8s-native DCS.

charts/postgres-operator/values.yaml

@@ -19,6 +19,8 @@ configTarget: "ConfigMap"
 configGeneral:
   # choose if deployment creates/updates CRDs with OpenAPIV3Validation
   enable_crd_validation: "true"
+  # update only the statefulsets without immediately doing the rolling update
+  enable_lazy_spilo_upgrade: "false"
   # start any new database pod without limitations on shm memory
   enable_shm_volume: "true"
   # etcd connection string for Patroni. Empty uses K8s-native DCS.