ci: Pass target triple to the test scripts

We pass it to the integration and unit tests script through --libc.
Cargo tests are left unmodified.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

scripts/run_unit_tests.sh

@@ -2,13 +2,15 @@
 
 source $HOME/.cargo/env
 
-cargo test --workspace --no-run
-pushd target/debug
+BUILD_TARGET=${BUILD_TARGET-x86_64-unknown-linux-gnu}
+
+cargo test --target $BUILD_TARGET --workspace --no-run
+pushd target/$BUILD_TARGET/debug
 ls  | grep net_util | grep -v "\.d" | xargs -n 1 sudo setcap cap_net_admin,cap_net_raw+ep
 popd
 
 sudo adduser $USER kvm
 newgrp kvm << EOF || exit 1
   export RUST_BACKTRACE=1
-  cargo test --workspace "$@" || exit 1;
+  cargo test --target $BUILD_TARGET --workspace "$@" || exit 1;
 EOF