[TESTS] Jenkins test flow (#152)

Jenkinsfile

docs/README.txt

python/tvm/contrib/rpc.py

tests/ci_build/Dockerfile.cpu

tests/ci_build/Dockerfile.gpu

tests/ci_build/Dockerfile.lint

tests/ci_build/README.md

tests/ci_build/ci_build.sh

tests/ci_build/install/ubuntu_install_core.sh

tests/ci_build/install/ubuntu_install_iverilog.sh

tests/ci_build/install/ubuntu_install_llvm.sh

tests/ci_build/install/ubuntu_install_opencl.sh

tests/ci_build/install/ubuntu_install_python.sh

tests/ci_build/with_the_same_user

tests/python/integration/test_contrib_cblas.py

tests/scripts/packages.mk

tests/scripts/task_cpp_unittest.sh

tests/scripts/task_lint.sh

tests/scripts/task_python_docs.sh

tests/scripts/task_python_integration.sh