Move VPN hardware assumption check to the end of setup

tearDown expect setUp is executed.
So move VPN hardware assumption check after all the setUps

Test: atest HostsideVpnTests
Bug: 330070197
Change-Id: I671897764908dc0188bcb2aef7177f1e4d573a8f

tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java

@@ -257,7 +257,6 @@ public class VpnTest {
 
     @Before
     public void setUp() throws Exception {
-        assumeTrue(supportedHardware());
         mNetwork = null;
         mTestContext = getInstrumentation().getContext();
         mTargetContext = getInstrumentation().getTargetContext();
@@ -272,6 +271,7 @@ public class VpnTest {
         mDevice.waitForIdle();
         mCtsNetUtils = new CtsNetUtils(mTestContext);
         mPackageManager = mTestContext.getPackageManager();
+        assumeTrue(supportedHardware());
     }
 
     @After