playbooks/clone-repo: using shell commands to clone repo

by using shell commands we have more flexibility to clone the repo
using specific ssh keys.
Additionally we provide the passphrase for the ssh key using the
AXW vault.

Signed-off-by: Marc Mattmüller <marc.mattmueller@netmodule.com>

playbooks/getting_started/clone-repository.yml

@@ -1,16 +1,59 @@
 - name: Clone a Git Repository
   hosts: linux
   gather_facts: no
+  vars:
+    git_repo_path: "~/nwl-ci"
+    ssh_auto_sshadd_file: "~/auto-sshadd"
+    ssh_keyfile: "~/.ssh/testvm_ed25519"
+    ssh_passphrase: !vault |
+          $ANSIBLE_VAULT;1.1;AES256
+          61323235356163363166663139613464303262333231656236313335313133373330316431333139
+          3135643639363966653938663666653831393132633765340a306665393864343466376637386661
+          39353535616366393631333161613065356666626266396138633866346462316365663339613263
+          6564643935326565630a386266376230613230336564363066373730363239303763663666363462
+          35353634626464656436633165316336323839616463333064633363306337353534
   tasks:
+    - name: Check if auto-sshadd file exists
+      stat:
+        path: "{{ ssh_auto_sshadd_file }}"
+      register: auto_sshadd_stat
+
+    - name: Check if repo exists
+      stat:
+        path: "{{ git_repo_path }}"
+      register: repo_dir_stat
+
+    - name: Prepare auto ssh-add file
+      register: prepareAutoSshAdd
+      ansible.builtin.shell: |
+        echo -e '#!/bin/bash\necho $SSH_PASS' > {{ ssh_auto_sshadd_file }}
+      when: not auto_sshadd_stat.stat.exists
+
+    - name: Load SSH key
+      register: loadingSshKey
+      ansible.builtin.shell: |
+        eval `ssh-agent -s`
+        SSH_PASS={{ssh_passphrase}} DISPLAY=1 SSH_ASKPASS="{{ssh_auto_sshadd_file}}" ssh-add {{ssh_keyfile}} < /dev/null
+    - name: Display ssh key loading output
+      debug:
+        msg: "{{loadingSshKey.stdout_lines}}"
+
     - name: Clone a develop branch
       register: clonerepo
-      git:
-        repo: ssh://git@bitbucket.gad.local:7999/nm-nsp/nwl-ci.git
-        dest: /home/user
-        clone: yes
-        update: yes
-        single_branch: yes
-        version: develop
+      ansible.builtin.shell: |
+        git clone ssh://git@bitbucket.gad.local:7999/nm-nsp/{{git_repo_path}}.git {{git_repo_path}}
+      when: not auto_sshadd_stat.stat.exists
     - name: Display cloning output
       debug:
         msg: "{{clonerepo.stdout_lines}}"
+
+    - name: Checkout and update branch
+      register: updaterepo
+      ansible.builtin.shell: |
+        cd nwl-ci
+        git checkout develop
+        git fetch -ap
+        git pull
+    - name: Display repo update output
+      debug:
+        msg: "{{updaterepo.stdout_lines}}"