Run git lfs in a separate step. (#3)

Run git lfs in a separate step.

Jenkins is unable to load the credentials for the custom LFS endpoint. Command works locally but it's unable use the credential manager within Jenkins.

AutomatedReview/Jenkinsfile

@@ -271,7 +271,18 @@ def PullFilesFromGit(String filenamePath, String branchName, boolean failIfNotFo
     }
 }
 
+def SetLfsCredentials(cmd, lbl = '') {
+    if (env.IS_UNIX) {
+        sh label: lbl,
+           script: cmd
+    } else { 
+        bat label: lbl,
+            script: cmd
+    }
+}
+
 def CheckoutRepo(boolean disableSubmodules = false) {
+    palSh('git lfs uninstall', 'Git LFS Uninstall')  // Prevent git from pulling lfs objects during checkout
 
     if(fileExists('.git')) {
         // If the repository after checkout is locked, likely we took a snapshot while git was running,
@@ -318,6 +329,14 @@ def CheckoutRepo(boolean disableSubmodules = false) {
         }
     }
 
+    // Run lfs in a separate step. Jenkins is unable to load the credentials for the custom LFS endpoint
+    withCredentials([usernamePassword(credentialsId: "${env.GITHUB_USER}", passwordVariable: 'accesstoken', usernameVariable: 'username')]) {
+        SetLfsCredentials("git config -f .lfsconfig lfs.url https://${username}:${accesstoken}@${env.LFS_URL}", 'Set credentials')
+    }
+    palSh('git lfs install', 'Git LFS Install')
+    palSh('git lfs pull', 'Git LFS Pull')
+}
+
     // CHANGE_ID is used by some scripts to identify uniquely the current change (usually metric jobs)
     palSh('git rev-parse HEAD > commitid', 'Getting commit id')
     env.CHANGE_ID = readFile file: 'commitid'