Rename externalPipelineExecute to pipelineExecute

documentation/docs/steps/pipelineExecute.md

@@ -0,0 +1,41 @@
+# pipelineExecute
+
+## Description
+Loads a pipeline from a git repository. The idea is to set up a pipeline job in Jenkins that loads a minimal pipeline, which in turn loads the shared library and then uses this step to load the actual pipeline.
+
+## Prerequisites
+
+none
+
+## Parameters
+
+| parameter          | mandatory | default         | possible values |
+| -------------------|-----------|-----------------|-----------------|
+| `repoUrl`          | yes       |                 |                 |
+| `branch`           | no        | 'master'        |                 |
+| `path`             | no        | 'Jenkinsfile'   |                 |
+| `credentialsId`    | no        | An empty String |                 |
+
+* `repoUrl` The url to the git repository of the pipeline to be loaded.
+* `branch` The branch of the git repository from which the pipeline should be checked out.
+* `path` The path to the Jenkinsfile, inside the repository, to be loaded.
+* `credentialsId` The Jenkins credentials containing user and password needed to access a private git repository.
+
+## Return value
+
+none
+
+## Side effects
+
+none
+
+## Exceptions
+
+* `Exception`
+    * If `repoUrl` is not provided.
+
+## Example
+
+```groovy
+pipelineExecute repoUrl: "https://github.com/MyOrg/MyPipelineRepo.git", branch: 'feature1', path: 'path/to/Jenkinsfile', credentialsId: 'MY_REPO_CREDENTIALS'
+```