Add Ansible integration for device management and deployment automation

- Added ansible/ directory with playbooks for:
  * deploy.yml: Update applications on devices from git
  * commands.yml: Execute arbitrary commands on devices
  * system_update.yml: OS updates and health checks
  * inventory.ini: Device and group configuration
  * README.md: Comprehensive Ansible guide
  * requirements.txt: Installation instructions

- Added ansible_integration.py: Python module wrapping Ansible operations
- Added utils_ansible.py: Updated utilities using Ansible instead of HTTP commands

Key benefits:
- Idempotent operations with error recovery
- Comprehensive logging and backup
- Multi-device orchestration
- Better reliability and control
- Replaces unreliable direct HTTP command execution

ansible/requirements.txt

@@ -0,0 +1,64 @@
+# Requirements for Server_Monitorizare Ansible Integration
+
+## System Requirements
+- Ubuntu/Debian Linux
+- Python 3.7+
+- SSH access to target devices
+
+## Python Packages
+# Flask and server dependencies
+Flask==2.3.0
+Werkzeug==2.3.0
+requests==2.31.0
+
+# Ansible automation
+ansible>=2.10.0,<3.0.0
+ansible-core>=2.12.0
+
+# Additional utilities
+python-dotenv==1.0.0
+pyyaml==6.0
+
+## Installation
+
+### 1. Install System Dependencies
+```bash
+sudo apt-get update
+sudo apt-get install -y python3-pip python3-dev
+sudo apt-get install -y openssh-client openssh-server
+```
+
+### 2. Install Python Packages
+```bash
+cd /srv/Server_Monitorizare
+pip3 install -r requirements.txt
+```
+
+### 3. Install Ansible
+```bash
+pip3 install ansible>=2.10.0
+# or
+sudo apt-get install -y ansible
+```
+
+### 4. Verify Installation
+```bash
+ansible --version
+ansible-playbook --version
+python3 -c "import ansible; print(ansible.__version__)"
+```
+
+## Optional: For SSH Key Authentication
+```bash
+sudo apt-get install -y openssh-client
+ssh-keygen -t rsa -b 4096 -f ~/.ssh/id_rsa -N ""
+```
+
+## Testing
+```bash
+# Test Ansible installation
+ansible localhost -m debug -a msg="Ansible works!"
+
+# Test against devices
+ansible all -i ansible/inventory.ini -m ping
+```