Add Sandbox Setup instructions

Add documentation on how to use
jenkins.onap.org/sandbox

Change-Id: I056d4c7f9867ab9c21d390d8610971bd4fc7170e
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>

diff --git a/Sandbox_Setup.md b/Sandbox_Setup.md
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+## ONAP Jenkins Sandbox Process:
+
+ONAP Jenkins Sandbox provides you Jenkins Job testing/experimentation environment
+that can be used before pushing job templates to the production
+[Jenkins](https://jenkins.onap.org).
+
+It is configured similar to the ONAP [ci-management] production instance;
+however, it cannot publish artifacts or vote in Gerrit. Be aware that this is a
+test environment, and as such there a limited allotment of minions to test on
+before pushing code to the ONAP repos.
+Keep the following points in mind prior to beginning work on ONAP Jenkins Sandbox
+environment:
+
+- Jobs are automatically deleted every weekend
+- Committers can login and configure Jenkins jobs in the sandbox directly
+- Sandbox jobs CANNOT perform any upload tasks
+- Sandbox jobs CANNOT vote on Gerrit
+- Jenkins nodes are configured using ONAP openstack VMs and you can not access
+  these VMs directly.
+
+Before you proceed further, ensure you have a Linux Foundation ID (LFID), which is
+required to access Gerrit & Jenkins. Also, to get an access to Sandbox environment
+please send email to helpdesk@onap.org (LF helpdesk team)
+
+To download **ci-management**, execute the following command to clone the
+**ci-managment** repository.
+
+`git clone ssh://<LFID>@gerrit.onap.org:29418/ci-management --recursive && scp -p -P 29418 \
+<LFID>@gerrit.onap.org:hooks/commit-msg ci-management/.git/hooks/`
+
+Once you successfully clone the repository, next step is to install JJB
+(Jenkins Job Builder) in order to experiment with Jenkins jobs.
+
+### Execute the following commands to install JJB on your machine:
+
+```
+cd ci-management
+sudo apt-get install python-virtualenv
+virtualenv onap_sandbox
+source onap_sandbox/bin/activate
+pip install jenkins-job-builder
+jenkins-jobs --version
+jenkins-jobs test --recursive jjb/
+```
+
+### Make a copy of the example JJB config file (in the builder/ directory)
+
+Backup the jenkins.ini.example to jenkins.ini
+
+`cp jenkins.ini.example jenkins.ini`
+
+After copying the jenkins.ini.example, modify `jenkins.ini` with your
+**Jenkins LFID username**, **API token** and **ONAP jenkins sandbox URL**
+
+```
+[job_builder]
+ignore_cache=True
+keep_descriptions=False
+include_path=.:scripts:~/git/
+recursive=True
+
+[jenkins]
+user=jwagantall <Provide your Jenkins Sandbox username>
+password= <Refer below steps to get API token>
+url=https://jenkins.onap.org/sandbox
+This is deprecated, use job_builder section instead
+ignore_cache=True
+```
+### How to retrieve API token?
+Login to the [Jenkins Sandbox](https://jenkins.onap.org/sandbox/), go to your user
+page by clicking on your username. Click **Configure** and then click **Show API Token**.
+
+To work on existing jobs or create new jobs, navigate to the `/jjb` directory where you
+will find all job templates for the project.  Follow the below commands to test,
+update or delete jobs in your sandbox environment.
+
+## To Test a Job:
+
+After you modify or create jobs in the above environment, it's good practice
+to test the job in sandbox environment before you submit this job to production CI environment.
+
+`jenkins-jobs --conf jenkins.ini test jjb/ <job-name>`
+
+**Example:** `jenkins-jobs --conf jenkins.ini test jjb/ sdc-master-verify-java`
+
+If the job you’d like to test is a template with variables in its name, it must be
+manually expanded before use. For example, the commonly used template `sdc-{stream}-verify-java`
+might expand to `sdc-master-verify-java`.
+
+A successful test will output the XML description of the Jenkins job described by the
+specified JJB job name.
+
+Execute the following command to pipe-out to a directory:
+
+`jenkins-jobs --conf jenkins.ini test jjb/ <job-name> -o <directoryname>`
+
+The output directory will contain files with the XML configurations.
+
+## To Update a job:
+
+Ensure you’ve configured your `jenkins.ini` and verified it by
+outputting valid XML descriptions of Jenkins jobs. Upon successful
+verification, execute the following command to update the job to the
+Jenkins sandbox.
+
+`jenkins-jobs --conf jenkins.ini update jjb/ <job-name>`
+
+**Example:** `jenkins-jobs --conf jenkins.ini update jjb/ sdc-master-verify-java`
+
+## Trigger jobs from Jenkins Sandbox:
+
+Once you push the Jenkins job configuration to the ONAP Sandbox environment,
+run the job from Jenkins Sandbox webUI. Follow the below process to trigger the build:
+
+Step 1: Login into the [Jenkins Sandbox WebUI](https://jenkins.onap.org/sandbox/)
+
+Step 2: Click on the **job** which you want to trigger, then click
+**Build with Parameters**, and finally click **Build**.
+
+Step 3: Verify the **Build Executor Status** bar and make sure that the build is triggered
+on the available executor. In Sandbox you may not see all platforms build executors and
+you don't find many like in production CI environment.
+
+Once the job is triggered, click on the build number to view the job
+details and the console output.
+
+## To Delete a Job:
+
+Execute the following command to Delete a job from Sandbox:
+
+`jenkins-jobs --conf jenkins.ini delete jjb/ <job-name>`
+
+**Example:** `jenkins-jobs --conf jenkins.ini delete jjb/ sdc-master-verify-java`
+
+The above command would delete the `sdc-master-verify-java` job.
+
+## Modify an Existing Job:
+
+In the ONAP Jenkins sandbox, you can directly edit or modify the job configuration
+by selecting the job name and clicking on the **Configure** button. Then, click the
+**Apply** and **Save** buttons to save the job.
+
+However, it is recommended to simply modify the job in your terminal and then follow
+the previously described steps in **To Test a Job** and **To Update a Job** to perform
+your modifications.
+
+## More online documentation:
+
+https://docs.openstack.org/infra/jenkins-job-builder/