Add Matvei Malkov to integration-test OWNERS
Add Matvei Malkov to integration-test OWNERS

I touch foundation and core performance benchmarks quite often, so would
be handy to not to wait for owner approval on my own benchmarks.

Change-Id: I479eacbe1a0c906ecb0dd226c00331b47c1bad78
Test: N/A

AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx