hs-test: reduce curl image size

before:
REPOSITORY    TAG      IMAGE ID       CREATED          SIZE
hs-test/curl  latest   4eededa5f68a   27 minutes ago   973MB

now:
REPOSITORY    TAG      IMAGE ID       CREATED              SIZE
hs-test/curl  latest   1a8faf0cbf8b   About a minute ago   110MB

Type: improvement

Change-Id: I7da5f5f26c3738e022225b1bb66d75f748074496
Signed-off-by: Matus Fabian <matfabia@cisco.com>
diff --git a/extras/hs-test/docker/Dockerfile.curl b/extras/hs-test/docker/Dockerfile.curl
index cbb0bbe..0722068 100644
--- a/extras/hs-test/docker/Dockerfile.curl
+++ b/extras/hs-test/docker/Dockerfile.curl
@@ -3,13 +3,12 @@
 FROM ubuntu:${UBUNTU_VERSION}
 
 RUN apt-get update \
- && apt-get install -y gcc git make autoconf libtool pkg-config cmake ninja-build golang \
+ && apt-get install -y xz-utils wget \
  && rm -rf /var/lib/apt/lists/*
 
 COPY script/build_curl.sh /build_curl.sh
 COPY resources/curl/* /tmp/
 RUN fallocate -l 10MB /tmp/testFile
-RUN apt-get update && apt-get install wget
 RUN /build_curl.sh
 
 CMD ["/bin/sh"]