Download and enable grpcurl in ptf docker. (#24587)

Added grpcurl binary to PTF Docker containers to enable gRPC testing capabilities for SONiC test framework. This supports upcoming gNOI (gRPC Network Operations Interface) testing infrastructure that requires a lightweight gRPC client tool.
Background:

SONiC is moving towards gRPC-based management interfaces (gNMI, gNOI, gNSI)
Current test framework lacks unified gRPC testing capabilities
grpcurl provides a simple, dependency-free solution for gRPC operations
Eliminates need for protocol buffer compilation in test environments


Co-authored-by: Copilot <[email protected]>
Co-authored-by: Ying Xie <[email protected]>

Author: 3 people

dockers/docker-ptf/Dockerfile.j2

@@ -97,7 +97,23 @@ RUN apt-get update          \
         iptables            \
         wireshark-common    \
         freeradius          \
-        quilt
+        quilt               \
+    {% if CONFIGURED_ARCH == "armhf" %}
+    && GRPCURL_ARCH=linux_armv6 \
+    {% elif CONFIGURED_ARCH == "arm64" %}
+    && GRPCURL_ARCH=linux_arm64 \
+    {% else %}
+    && GRPCURL_ARCH=linux_x86_64 \
+    {% endif %}
+    && GRPCURL_VERSION=1.9.1 && \
+    curl -L "https://github.com/fullstorydev/grpcurl/releases/download/v${GRPCURL_VERSION}/grpcurl_${GRPCURL_VERSION}_${GRPCURL_ARCH}.tar.gz" \
+      -o /tmp/grpcurl_${GRPCURL_VERSION}_${GRPCURL_ARCH}.tar.gz && \
+    cd /tmp && \
+    tar xvf grpcurl_${GRPCURL_VERSION}_${GRPCURL_ARCH}.tar.gz && \
+    mv grpcurl /usr/local/bin/grpcurl && \
+    chmod +x /usr/local/bin/grpcurl && \
+    rm -f /tmp/grpcurl_${GRPCURL_VERSION}_${GRPCURL_ARCH}.tar.gz && \
+    rm -rf /var/lib/apt/lists/*
 
 {% if PTF_ENV_PY_VER == "py3" %}
 RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 1 \