Ignore all tests in IpSecManagerTunnelTest with instant apps

Test runner will crash while tring to get test network service
in IpSecManagerTunnelTest. Because MANAGE_TEST_NETWORKS
permission can't be granted to instant apps. So ignore all tests
in this file.

Bug: 133399750
Test: atest CtsNetTestCases --instant
Change-Id: I5a096f20ec168133dbb65d27d3388c01e6ee895b
1 file changed
tree: 99f47da99dceed4495445c84a76b7bc334b7d739
  1. tests/