Fix cpkg skipCi/skipPush options handling

vars/cpkg.groovy

@@ -10,8 +10,8 @@ def call(Map params = [:]) {
     def gitCredentials = params.gitCredentials ? params.gitCredentials : null
     def gitEmail = params.gitEmail ? params.gitEmail : 'jenkins@cadoles.com'
     def gitUsername = params.gitUsername ? params.gitUsername : 'Jenkins'
-    def skipCi = params.skipCi ? params.skipCi : false
+    def skipCi = params.containsKey('skipCi') ? params.skipCi : false
-    def skipPush = params.skipPush ? params.skipPush: true
+    def skipPush = params.containsKey('skipPush') ? params.skipPush: true
 
     // Define dist branch based on provided informations and base branch name
     def distBranch = "dist/${dist}/${distVersion}/${distBranchName}"
@@ -84,37 +84,9 @@ def call(Map params = [:]) {
     }
 
     if (gitCredentials != null) {
-        withCredentials([
+        git.withHTTPCredentials(gitCredentials) {
-            usernamePassword(
-                credentialsId: gitCredentials, 
-                usernameVariable: 'GIT_USERNAME', 
-                passwordVariable: 'GIT_PASSWORD'
-            )
-        ]) {
-            def randomUUID = UUID.randomUUID().toString()
-            def tmpAskPassScript = pwd(tmp:true) + "/${randomUUID}"
-            try {
-                writeFile(
-                    file: tmpAskPassScript,
-                    text: '''
-                    #!/bin/sh
-                    case "$1" in
-                    Username*) echo $GIT_USERNAME ;;
-                    Password*) echo $GIT_PASSWORD ;;
-                    esac
-                    '''
-                )
-                sh(script: "git config user.email '${gitEmail}'")
-                sh(script: "git config user.name '${gitUsername}'")
-                sh(script: "chmod +x '${tmpAskPassScript}'")
-                withEnv(["GIT_ASKPASS=${tmpAskPassScript}"]) {
             proc.call()
         }
-            } finally {
-                sh(script: "rm -f '${tmpAskPassScript}'")
-            }
-            
-        }
     } else {
         proc.call()
     }