[DO-273] shared libs update (#12)

Reviewed-on: https://git.avroid.tech/DevOps/jenkins-shared-lib/pulls/12
Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Co-committed-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>

src/tech/avroid/api/Nexus.groovy

@@ -8,9 +8,9 @@ class Nexus implements Serializable {
 
     /**
      *
-     @param script		Script - context pointer on step in Pipelines 
-     @param host		String - Nexus host name 
-	 @param credentials	String - User's name and pass in Nexus
+     @param script      Script - context pointer on step in Pipelines 
+     @param host        String - Nexus host name 
+     @param credentials String - User's name and pass in Nexus
      */
     Nexus(Script script, String host, String credentials) {
         this.script = script
@@ -28,7 +28,7 @@ class Nexus implements Serializable {
      @param repository      String - Name of Nexus repository
      @param path            String - Path in Nexus repository
      @param artifactName    String - Name of artifact in Nexus (optional). Common calculate from artifactPath
-     @param type			String - type of repository
+     @param type            String - type of repository
      @return String - artifact url in Nexus 
      */
     public String upload(Map args = [:], String type = "raw") {
@@ -48,9 +48,9 @@ class Nexus implements Serializable {
 
     /**
     * Method get artifacts' urls from nexus repository
-    @param repository     String  - Repository name in Nexus.
-    @param type		      String  - type of repository
-    @return                List    - list of artifacts' urls
+    @param repository   String  - Repository name in Nexus.
+    @param type         String  - type of repository
+    @return             List    - list of artifacts' urls
     */
     public List search(String repository, String type = "raw") {
         String newUrl = ""
@@ -96,7 +96,31 @@ class Nexus implements Serializable {
         return urls
     }
 
+
     /**
+     * Download artifact from Nexus repo
+     *
+     @param url         String - URL, откуда будет скачан файл
+     @param outputFile  String - Путь с именем файла, по которому будет сохранен(optional).
+     * По умолчанию с именем сохраняется в текущей директории с именем файла
+     @return            Srting - Возвращает имя загруженного файла
+     */
+    String download(String url, String outputFile = '') {
+        String artifactName = url.split('/').last()
+        String artifact     = outputFile ?: "${this.script.pwd()}/${artifactName}"
+
+        this.script.httpRequest(
+            url:            url,
+            authentication: this.credentials,
+            httpMode:       "GET",
+            quiet:          true,
+            outputFile:     artifact
+        )
+
+        return artifact
+    }
+
+   /**
     * Method get artifact's info from nexus
     @param repository      String  - Repository name in Nexus.
     @param name            String  - Artifact path in Nexus.