test: Check ignored IPs are filtered correctly (#188)

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**What this PR does / why we need it**:

Adding missing test case in ignore IPs PR.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(,
fixes #<issue_number>, ...)` format, will close the issue(s) when PR
gets merged)*:
Fixes #

**How Has This Been Tested?**:

_Please describe the tests that you ran to verify your changes. Provide
instructions so we can reproduce. Please also list any relevant details
for your test configuration and test output_


**Special notes for your reviewer**:

_Please confirm that if this PR changes any image versions, then that's
the sole change this PR makes._

**Release note**:
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```release-note

```

internal/testing/mock/mock_environment.go

@@ -117,7 +117,7 @@ func CreateMockEnvironment(ctx context.Context, kClient *fake.Clientset) (*MockE
 		}, {
 			IP: ptr.To("127.200.200.1"),
 		}, {
-			IP: ptr.To("127.300.300.1"),
+			IP: ptr.To(MockIP),
 		}},
 	}}
 	filteredAddressesNode, err := createNodeForVM(ctx, kClient, filteredAddressesVM)

pkg/provider/manager_test.go

@@ -158,7 +158,9 @@ var _ = Describe("Test Manager", func() {
 			addresses, err := m.getNodeAddresses(ctx, vm)
 			Expect(err).ShouldNot(HaveOccurred())
 			Expect(len(addresses)).To(Equal(2), "Received addresses: %v", addresses)
-			Expect(addresses).Should(ContainElement(v1.NodeAddress{Type: v1.NodeInternalIP, Address: "127.300.300.1"}))
+			Expect(addresses).Should(ContainElement(v1.NodeAddress{Type: v1.NodeInternalIP, Address: mock.MockIP}))
+			Expect(addresses).ShouldNot(ContainElement(v1.NodeAddress{Type: v1.NodeInternalIP, Address: "127.100.100.1"}))
+			Expect(addresses).ShouldNot(ContainElement(v1.NodeAddress{Type: v1.NodeInternalIP, Address: "127.200.200.1"}))
 		})
 	})