[ONNX CI] ONNX CI Improvements (#1824)

* Update email notification method

- Link to pull request
- Jenkins build links to Blue Ocean

* Update prepare_environment.sh

- remove artifacts from previous build

.ci/onnx/jenkins/Jenkinsfile

@@ -128,6 +128,7 @@ def Notify() {
     String notifyPeople = "$ghprbPullAuthorEmail, $ghprbActualCommitAuthorEmail"
     Closure notifyMethod = { configMap ->
         if(currentBuild.result == "FAILURE") {
+            blue_ocean = "https://crackerjack.intel.com/blue/organizations/jenkins/onnx%2Fngraph_onnx_integration_ci/detail/ngraph_onnx_integration_ci/${BUILD_NUMBER}/pipeline"
             emailext (
                 subject: "NGraph-Onnx CI: NGraph PR $ghprbPullId $currentBuild.result!",
                 body: """
@@ -135,11 +136,9 @@ def Notify() {
                         <tr><td>Status:</td> <td>${currentBuild.result}</td></tr>
                         <tr><td>Repository</td> <td>$ghprbGhRepository</td></tr>
                         <tr><td>Branch:</td> <td>$ghprbSourceBranch</td></tr>
-                        <tr><td>Jenkins Job No:</td> <td>$BUILD_NUMBER</td></tr>
-                        <tr><td>Jenkins Job Link:</td> <td>$BUILD_URL</td></tr>
-                        <tr><td>Pull Request:</td> <td>$ghprbPullId</td></tr>
+                        <tr><td>Jenkins Build:</td> <td> <a href=$blue_ocean> ${BUILD_NUMBER} </a> </td></tr>
+                        <tr><td>Pull Request:</td> <td><a href=$ghprbPullLink>$ghprbPullId</a> </td></tr>
                         <tr><td>Commit SHA:</td> <td>$ghprbActualCommit</td></tr>
-                        <tr><td>Link:</td> <td>$ghprbPullLink</td></tr>
                         <tr><td>nGraph-ONNX Branch:</td> <td>${ONNX_BRANCH}</td></tr>
                     </table>
                 """,

.ci/onnx/jenkins/prepare_environment.sh

@@ -65,19 +65,19 @@ function build_ngraph() {
     mkdir -p ./build
     cd ./build
     cmake ../ -DNGRAPH_TOOLS_ENABLE=FALSE -DNGRAPH_UNIT_TEST_ENABLE=FALSE -DNGRAPH_USE_PREBUILT_LLVM=TRUE -DNGRAPH_ONNX_IMPORT_ENABLE=TRUE -DCMAKE_INSTALL_PREFIX="${ngraph_directory}/ngraph_dist" || return 1
-    rm -f "${ngraph_directory}"/ngraph/python/dist/ngraph*.whl
     make -j $(lscpu --parse=CORE | grep -v '#' | sort | uniq | wc -l) || return 1
     make install || return 1
     cd "${ngraph_directory}/ngraph/python"
     if [ ! -d ./pybind11 ]; then
         git clone --recursive https://github.com/pybind/pybind11.git
     fi
+    rm -f "${ngraph_directory}"/ngraph/python/dist/ngraph*.whl
+    rm -rf "${ngraph_directory}/ngraph/python/*.so ${ngraph_directory}/ngraph/python/build"
     export PYBIND_HEADERS_PATH="${ngraph_directory}/ngraph/python/pybind11"
     export NGRAPH_CPP_BUILD_PATH="${ngraph_directory}/ngraph_dist"
     export NGRAPH_ONNX_IMPORT_ENABLE="TRUE"
     python3 setup.py bdist_wheel
     # Clean build artifacts
-    rm -rf "${ngraph_directory}/ngraph/python/_pyngraph.cpython* ${ngraph_directory}/ngraph/python/build"
     rm -rf "${ngraph_directory}/ngraph_dist"
     return 0
 }