Update install_cuda_ubuntu.sh as per marian-nmt#932

scripts/ci/install_cuda_ubuntu.sh

@@ -60,6 +60,13 @@ CUDA_PACKAGES_IN=(
 
 CUDA_PACKAGES=""
 for package in "${CUDA_PACKAGES_IN[@]}"; do
+    # @todo This is not perfect. Should probably provide a separate list for diff versions
+    # cuda-compiler-X-Y if CUDA >= 9.1 else cuda-nvcc-X-Y
+    if [[ "${package}" == "nvcc" ]] && version_ge "$CUDA_VERSION_MAJOR_MINOR" "9.1" ; then
+        package="compiler"
+    elif [[ "${package}" == "compiler" ]] && version_lt "$CUDA_VERSION_MAJOR_MINOR" "9.1" ; then
+        package="nvcc"
+    fi
     # Build the full package name and append to the string.
     CUDA_PACKAGES+=" cuda-${package}-${CUDA_MAJOR}-${CUDA_MINOR}"
 done
@@ -72,8 +79,8 @@ echo "CUDA_PACKAGES ${CUDA_PACKAGES}"
 
 PIN_FILENAME="cuda-ubuntu${UBUNTU_VERSION}.pin"
 PIN_URL="https://developer.download.nvidia.com/compute/cuda/repos/ubuntu${UBUNTU_VERSION}/x86_64/${PIN_FILENAME}"
-APT_KEY_URL="http://developer.download.nvidia.com/compute/cuda/repos/ubuntu${UBUNTU_VERSION}/x86_64/7fa2af80.pub"
-REPO_URL="http://developer.download.nvidia.com/compute/cuda/repos/ubuntu${UBUNTU_VERSION}/x86_64/"
+APT_KEY_URL="https://developer.download.nvidia.com/compute/cuda/repos/ubuntu${UBUNTU_VERSION}/x86_64/3bf863cc.pub"
+REPO_URL="https://developer.download.nvidia.com/compute/cuda/repos/ubuntu${UBUNTU_VERSION}/x86_64/"
 
 echo "PIN_FILENAME ${PIN_FILENAME}"
 echo "PIN_URL ${PIN_URL}"
@@ -91,7 +98,7 @@ sudo add-apt-repository "deb ${REPO_URL} /"
 sudo apt-get update
 
 echo "Installing CUDA packages ${CUDA_PACKAGES}"
-sudo apt-get -y install ${CUDA_PACKAGES}
+sudo apt-get -y --allow-unauthenticated install ${CUDA_PACKAGES}
 
 if [[ $? -ne 0 ]]; then
     echo "CUDA Installation Error."