kie-issues#744: Move jenkins pipeline shared libraries (#1131)

* Move jenkins pipeline library

* tweak GHA PR check

* tweak pom.xml to allow running from different dir

* remove tmp files

---------

Co-authored-by: jstastny-cz <[email protected]>

.github/workflows/jenkins-pipeline-shared-library-maven-tests-PR.yml

@@ -0,0 +1,26 @@
+# This workflow will build a Java project with Maven
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+
+name: Jenkins Pipeline Shared Libraries Maven Tests
+
+on:
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'jenkins-pipeline-shared-libraries/**'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v3
+      with:
+        java-version: 8
+        distribution: temurin
+        cache: maven
+    - name: Build with Maven
+      run: mvn -B test --file jenkins-pipeline-shared-libraries/pom.xml

jenkins-pipeline-shared-libraries/README.md

@@ -0,0 +1,20 @@
+# Jenkins Pipeline Shared Libraries
+
+This repository contains shared libraries used across different KIE Jenkins pipeline scripts. 
+
+# Development
+Your scripts should be located in `/vars` folder.
+
+## How to cover with unit tests
+Once your groovy methods/script files are implemented you should cover them with Spock tests.
+Those tests are located in `/test/vars` folder. Remember you should add Jenkins plugins used by the script as a dependency in the `pom.xml` file in case it is not present, like
+
+```xml
+<dependency>
+    <!-- provides configFileProvider() and configFile() steps -->
+    <groupId>org.jenkins-ci.plugins</groupId>
+    <artifactId>config-file-provider</artifactId>
+    <version>3.6.2</version>
+    <scope>test</scope>
+</dependency>
+```