added terraform installation

Jenkinsfile

@@ -6,12 +6,18 @@ pipeline {
     }
 
     stages {
-        stage('First test') {
+        stage('Installing Terraform') {
             steps {
                 script {
                     node {
                         sh """
-                        echo ${params.testParam}
+                        apt install wget
+                        wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
+                        gpg --no-default-keyring --keyring /usr/share/keyrings/hashicorp-archive-keyring.gpg --fingerprint
+                        echo 'deb [arch=\$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com \$(lsb_release -cs) main' | sudo tee /etc/apt/sources.list.d/hashicorp.list
+                        sudo apt update
+                        sudo apt install terraform=1.4.4-*
+                        terraform version
                         """
                     }
                 }