adding new script

Jenkinsfile

@@ -68,11 +68,8 @@
         stage('install required python packages') {
             steps {
                 sh '''
-                python --version
+                sudo apt-get -y install python3-pip
-                python3 --version
+                pip3 install --user -r requirements.txt 
-                pip3 --version
-                pip install --user --upgrade pip
-                pip install --user -r requirements.txt 
                 '''
                 print env.JENKINS_URL
             }