agent: Enable kata-cc-rustls-tls in image-rs

- Enable the kata-cc-rustls-tls feature in image-rs, so that it
can get resources from the KBS in order to retrieve the registry
credentials.
- Also bump to the latest image-rs to pick up protobuf fixes
- Add libprotobuf-dev dependency to the agent packaging
as it is needed by the new image-rs feature
- Add extra env in the agent make test as the
new version of the anyhow crate has changed the backtrace capture thus unit
tests of kata-agent that compares a raised error with an expected one
would fail. To fix this, we need only panics to have backtraces, thus
set RUST_BACKTRACE=0 for tests due to document
https://docs.rs/anyhow/latest/anyhow/

Fixes #9538

Signed-off-by: Xynnn007 <xynnn@linux.alibaba.com>
Signed-off-by: stevenhorsman <steven@uk.ibm.com>

tools/packaging/static-build/agent/Dockerfile

@@ -26,16 +26,17 @@ RUN mkdir ${RUSTUP_HOME} ${CARGO_HOME} && chmod -R a+rwX /opt
 RUN apt-get update && \
 	apt-get --no-install-recommends -y install \
 		ca-certificates \
+		clang \
 		curl \
 		g++ \
 		gcc \
+		libprotobuf-dev \
 		libssl-dev \
 		make \
 		musl-tools \
 		openssl \
 		perl \
-		protobuf-compiler \
-		clang && \
+		protobuf-compiler && \
 	apt-get clean && rm -rf /var/lib/apt/lists/ && \
 	curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain ${RUST_TOOLCHAIN}