Updating the capabilities set table for 4.17 and 4.18

Author: obrown1205

snippets/capabilities-table.adoc

@@ -28,6 +28,12 @@ The following table describes the `baselineCapabilitySet` values.
 |`v4.16`
 |Specify this option when you want to enable the default capabilities for {product-title} 4.16. By specifying `v4.16`, capabilities that are introduced in newer versions of {product-title} are not enabled. The default capabilities in {product-title} 4.16 are `baremetal`, `MachineAPI`, `marketplace`, `OperatorLifecycleManager`, `openshift-samples`, `Console`, `Insights`, `Storage`, `CSISnapshot`, `NodeTuning`, `ImageRegistry`, `Build`, `CloudCredential`, `DeploymentConfig`, and `CloudControllerManager`.
 
+|`v4.17`
+|Specify this option when you want to enable the default capabilities for {product-title} 4.17. By specifying `v4.17`, capabilities that are introduced in newer versions of {product-title} are not enabled. The default capabilities in {product-title} 4.17 are `baremetal`, `MachineAPI`, `marketplace`, `OperatorLifecycleManager`, `openshift-samples`, `Console`, `Insights`, `Storage`, `CSISnapshot`, `NodeTuning`, `ImageRegistry`, `Build`, `CloudCredential`, `DeploymentConfig`, and `CloudControllerManager`.
+
+|`v4.18`
+|Specify this option when you want to enable the default capabilities for {product-title} 4.18. By specifying `v4.18`, capabilities that are introduced in newer versions of {product-title} are not enabled. The default capabilities in {product-title} 4.18 are `baremetal`, `MachineAPI`, `marketplace`, `OperatorLifecycleManager`, `OperatorLifecycleManagerV1`, `openshift-samples`, `Console`, `Insights`, `Storage`, `CSISnapshot`, `NodeTuning`, `ImageRegistry`, `Build`, `CloudCredential`, `DeploymentConfig`, and `CloudControllerManager`.
+
 |`None`
 |Specify when the other sets are too large, and you do not need any capabilities or want to fine-tune via `additionalEnabledCapabilities`.