rust: Make rust test apps non_critical

Rust test apps may panic under unexpected conditions (unwrap, expect,
expect_err, etc.). While we shouldn't be using these at all, this style
is not currently enforced. To make debugging easier, we shouldn't take
the entire OS down if these tests fail.

Test: com.android.trusty.rust.*.test
Bug: None
Change-Id: Ie7d3b444c86786dee3f714d01a13d93ebb12c184
5 files changed