Ability to set pod environment variables on cluster resource (#1794)

* Ability to set pod environment variables on cluster resource

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>

pkg/apis/acid.zalan.do/v1/crds.go

@@ -311,6 +311,16 @@ var PostgresCRDResourceValidation = apiextv1.CustomResourceValidation{
 					"enableShmVolume": {
 						Type: "boolean",
 					},
+					"env": {
+						Type:     "array",
+						Nullable: true,
+						Items: &apiextv1.JSONSchemaPropsOrArray{
+							Schema: &apiextv1.JSONSchemaProps{
+								Type:                   "object",
+								XPreserveUnknownFields: util.True(),
+							},
+						},
+					},
 					"init_containers": {
 						Type:        "array",
 						Description: "deprecated",

pkg/apis/acid.zalan.do/v1/postgresql_type.go

@@ -80,6 +80,7 @@ type PostgresSpec struct {
 	TLS                   *TLSDescription             `json:"tls,omitempty"`
 	AdditionalVolumes     []AdditionalVolume          `json:"additionalVolumes,omitempty"`
 	Streams               []Stream                    `json:"streams,omitempty"`
+	Env                   []v1.EnvVar                 `json:"env,omitempty"`
 
 	// deprecated json tags
 	InitContainersOld       []v1.Container `json:"init_containers,omitempty"`

pkg/apis/acid.zalan.do/v1/zz_generated.deepcopy.go

@@ -779,6 +779,13 @@ func (in *PostgresSpec) DeepCopyInto(out *PostgresSpec) {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
+	if in.Env != nil {
+		in, out := &in.Env, &out.Env
+		*out = make([]corev1.EnvVar, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
 	if in.InitContainersOld != nil {
 		in, out := &in.InitContainersOld, &out.InitContainersOld
 		*out = make([]corev1.Container, len(*in))