Auto merge of #8713 - ehuss:filters_target-cross, r=alexcrichton
Auto merge of #8713 - ehuss:filters_target-cross, r=alexcrichton

Add cross check to filters_target test.

This test requires a cross compiler target to be installed, so disable it if it is not.

rust-lang/cargo,eminence/cargo,rustyhorde/cargo,nipunn1313/cargo,tshepang/cargo,nipunn1313/cargo,rustyhorde/cargo,tshepang/cargo,eminence/cargo,tshepang/cargo,rustyhorde/cargo,eminence/cargo,rust-lang/cargo,rustyhorde/cargo,nipunn1313/cargo,eminence/cargo,nipunn1313/cargo,rust-lang/cargo,tshepang/cargo,rust-lang/cargo