profiler: add integration test for go1.10
profiler: add integration test for go1.10

Change-Id: Ic7b1f056bcc88f6c00ff9bc81ca4d0d03ae8b382
Reviewed-on: https://code-review.googlesource.com/26050
Reviewed-by: Jianqiao Li <2d515f767da37bdb8a87cabf23e3e650ab8dc69c@google.com>
Reviewed-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>

googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go