[ansible][nic_simulator] Re-generate py dependencies in deployment (sonic-net#8477)

Approach
What is the motivation for this PR?
Generate the nic_simulator gRPC Python dependencies in deployment.

Signed-off-by: Longxiang Lyu lolv@microsoft.com

How did you do it?
How did you verify/test it?
verified on dualtor-aa testbed

Any platform specific information?

Author: lolyu

ansible/roles/vm_set/tasks/control_nic_simulator.yml

@@ -50,13 +50,22 @@
     - name: Set nic simulator source directory
       set_fact:
         nic_simulator_dir: "{{ (playbook_dir, 'dualtor', 'nic_simulator') | path_join }}"
+        remote_nic_simulator_dir: "{{ (abs_root_path, 'nic_simulator') | path_join }}"
 
     - name: Copy nic simulator to test server
       copy:
         src: "{{ nic_simulator_dir }}"
         dest: "{{ abs_root_path }}"
         force: yes
 
+    - name: Generate gRPC dependencies from the protocol buffer definitions
+      shell:
+        cmd: python3 -m grpc.tools.protoc -I. --python_out=. --grpc_python_out=. {{ item }}
+        chdir: "{{ remote_nic_simulator_dir }}"
+      loop:
+       - nic_simulator_grpc_service.proto
+       - nic_simulator_grpc_mgmt_service.proto
+
     - name: Generate nic simulator systemd service file
       template:
         src: nic-simulator.service.j2