Add server-side apply options

This adds patch options related to server-side apply, and moves options
to their own file.

Author: DirectXMan12

pkg/client/client_test.go

@@ -2164,12 +2164,18 @@ var _ = Describe("Client", func() {
 
 		It("should allow setting Force to 'true'", func() {
 			po := &client.PatchOptions{}
-			client.PatchWithForce()(po)
+			client.ForceOwnership(po)
 			mpo := po.AsPatchOptions()
 			Expect(mpo.Force).NotTo(BeNil())
 			Expect(*mpo.Force).To(BeTrue())
 		})
 
+		It("should allow setting the field manager", func() {
+			po := &client.PatchOptions{}
+			client.FieldOwner("some-owner")(po)
+			Expect(po.AsPatchOptions().FieldManager).To(Equal("some-owner"))
+		})
+
 		It("should produce empty metav1.PatchOptions if nil", func() {
 			var po *client.PatchOptions
 			Expect(po.AsPatchOptions()).To(Equal(&metav1.PatchOptions{}))