Add abillity to use server-side-apply feature (#118)

This allows overcome big configmaps limitations

Author: alon-dotan-starkware

docs/resources/kubectl_manifest.md

@@ -41,6 +41,7 @@ YAML
 * `yaml_body` - Required. YAML to apply to kubernetes.
 * `sensitive_fields` - Optional. List of fields (dot-syntax) which are sensitive and should be obfuscated in output. Defaults to `["data"]` for Secrets.
 * `force_new` - Optional. Forces delete & create of resources if the `yaml_body` changes. Default `false`.
+* `server_side_apply` - Optional. Allow using server-side-apply method. Default `false`.
 * `ignore_fields` - Optional. List of map fields to ignore when applying the manifest. See below for more details.
 * `override_namespace` - Optional. Override the namespace to apply the kubernetes resource to, ignoring any declared namespace in the `yaml_body`.
 * `validate_schema` - Optional. Setting to `false` will mimic `kubectl apply --validate=false` mode. Default `true`.

go.mod

@@ -25,4 +25,5 @@ require (
 	sigs.k8s.io/yaml v1.2.0
 )
 
+replace github.com/tencentcloud/tencentcloud-sdk-go => github.com/tencentcloud/tencentcloud-sdk-go v1.0.175
 //replace github.com/Azure/go-autorest v10.15.4+incompatible => github.com/Azure/go-autorest v13.0.0+incompatible

go.sum

@@ -662,6 +662,7 @@ github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5Cc
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/svanharmelen/jsonapi v0.0.0-20180618144545-0c0828c3f16d/go.mod h1:BSTlc8jOjh0niykqEGVXOLXdi9o0r0kR8tCYiMvjFgw=
+github.com/tencentcloud/tencentcloud-sdk-go v1.0.175/go.mod h1:asUz5BPXxgoPGaRgZaVm1iGcUAuHyYUo1nXqKa83cvI=
 github.com/tencentcloud/tencentcloud-sdk-go v3.0.82+incompatible/go.mod h1:0PfYow01SHPMhKY31xa+EFz2RStxIqj6JFAJS+IkCi4=
 github.com/tencentyun/cos-go-sdk-v5 v0.0.0-20190808065407-f07404cefc8c/go.mod h1:wk2XFUg6egk4tSDNZtXeKfe2G6690UVyt163PuUxBZk=
 github.com/terraform-providers/terraform-provider-openstack v1.15.0/go.mod h1:2aQ6n/BtChAl1y2S60vebhyJyZXBsuAI5G4+lHrT1Ew=

kubernetes/resource_kubectl_manifest.go

@@ -202,6 +202,7 @@ metadata:
 				_ = d.Set("namespace", metaObjLive.GetNamespace())
 				_ = d.Set("name", metaObjLive.GetName())
 				_ = d.Set("force_new", false)
+				_ = d.Set("server_side_apply", false)
 
 				// clear out fields user can't set to try and get parity with yaml_body
 				meta_v1_unstruct.RemoveNestedField(metaObjLive.Object, "metadata", "creationTimestamp")
@@ -409,6 +410,12 @@ metadata:
 				Optional:    true,
 				Default:     false,
 			},
+			"server_side_apply": {
+				Type:        schema.TypeBool,
+				Description: "Default to client-side-apply. Setting to true will use server-side apply.",
+				Optional:    true,
+				Default:     false,
+			},
 			"ignore_fields": {
 				Type:        schema.TypeList,
 				Elem:        &schema.Schema{Type: schema.TypeString},
@@ -511,6 +518,11 @@ func resourceKubectlManifestApply(ctx context.Context, d *schema.ResourceData, m
 		applyOptions.Validator = validation.NullSchema{}
 	}
 
+	if d.Get("server_side_apply").(bool) {
+		applyOptions.ServerSideApply = true
+		applyOptions.FieldManager = "kubectl"
+	}
+
 	if manifest.hasNamespace() {
 		applyOptions.Namespace = manifest.unstruct.GetNamespace()
 	}