Jenkinsfile changes for apache#7333.

 * Make build/standalone_crt available to CI unit tests.
 * We could do this with stash but it's complex because we would need
   to use wildcards. Instead, rebuild standalone_crt source tree before testing.

Jenkinsfile

@@ -248,6 +248,8 @@ stage('Unit Test') {
         unpack_lib('gpu', tvm_multilib)
         timeout(time: max_time, unit: 'MINUTES') {
           sh "${docker_run} ${ci_gpu} ./tests/scripts/task_ci_python_setup.sh"
+          sh "${docker_run} ${ci_gpu} ./tests/scripts/task_config_build_gpu.sh"
+          sh "${docker_run} ${ci_gpu} ./tests/scripts/task_build.sh build standalone_crt"
           sh "${docker_run} ${ci_gpu} ./tests/scripts/task_sphinx_precheck.sh"
           sh "${docker_run} ${ci_gpu} ./tests/scripts/task_python_unittest_gpuonly.sh"
           sh "${docker_run} ${ci_gpu} ./tests/scripts/task_python_integration_gpuonly.sh"
@@ -262,6 +264,8 @@ stage('Unit Test') {
         unpack_lib('i386', tvm_multilib)
         timeout(time: max_time, unit: 'MINUTES') {
           sh "${docker_run} ${ci_i386} ./tests/scripts/task_ci_python_setup.sh"
+          sh "${docker_run} ${ci_gpu} ./tests/scripts/task_config_build_i386.sh"
+          sh "${docker_run} ${ci_gpu} ./tests/scripts/task_build.sh build standalone_crt"
           sh "${docker_run} ${ci_i386} ./tests/scripts/task_python_unittest.sh"
           sh "${docker_run} ${ci_i386} ./tests/scripts/task_python_integration.sh"
           sh "${docker_run} ${ci_i386} ./tests/scripts/task_python_vta_fsim.sh"
@@ -276,6 +280,8 @@ stage('Unit Test') {
         unpack_lib('arm', tvm_multilib)
         timeout(time: max_time, unit: 'MINUTES') {
           sh "${docker_run} ${ci_arm} ./tests/scripts/task_ci_python_setup.sh"
+          sh "${docker_run} ${ci_arm} ./tests/scripts/task_config_build_arm.sh"
+          sh "${docker_run} ${ci_arm} ./tests/scripts/task_build.sh build standalone_crt"
           sh "${docker_run} ${ci_arm} ./tests/scripts/task_python_unittest.sh"
           // sh "${docker_run} ${ci_arm} ./tests/scripts/task_python_integration.sh"
         }