ci: Introduce SGX integration testing

Extending the Cloud-Hypervisor CI to allow for testing SGX on a
dedicated machine where special image and kernels are ready.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

scripts/run_integration_tests_sgx.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+set -x
+
+source $HOME/.cargo/env
+
+BUILD_TARGET="$(uname -m)-unknown-linux-${CH_LIBC}"
+CFLAGS=""
+TARGET_CC=""
+if [[ "${BUILD_TARGET}" == "x86_64-unknown-linux-musl" ]]; then
+TARGET_CC="musl-gcc"
+CFLAGS="-I /usr/include/x86_64-linux-musl/ -idirafter /usr/include/"
+fi
+
+cargo build --all --release --target $BUILD_TARGET
+strip target/$BUILD_TARGET/release/cloud-hypervisor
+
+export RUST_BACKTRACE=1
+
+time cargo test --features "integration_tests" "tests::sgx::$@"
+RES=$?
+
+if [ $RES -eq 0 ]; then
+    # virtio-mmio based testing
+    cargo build --all --release --target $BUILD_TARGET --no-default-features --features "mmio,kvm"
+    strip target/$BUILD_TARGET/release/cloud-hypervisor
+
+    time cargo test --features "integration_tests,mmio" "tests::sgx::$@"
+    RES=$?
+fi
+
+exit $RES