Add H3C device support with configuration and expected output files

- Introduced support for H3C devices by adding a new configuration file `config.conf` containing interface and VLAN settings.
- Created an expected output JSON file `config.expected.json` to validate the parsing of H3C configurations.
- Updated the test model cases to include H3C for comprehensive testing of device parsing functionality.

oxi/interfaces/models/templates/huawei.ttp

@@ -20,7 +20,7 @@ default_system = {
 
 <group name="interfaces">
 interface {{ interface }}
- description {{ description }}
+ description {{ description | ORPHRASE }}
  ip address {{ ip_address }} {{ mask | to_cidr }}
 </group>
 <group name="vlans">