Cache maven dependencies for californium build

The fetching from 3rd party repos has become very flaky.
To avoid mirrors throttling us and other flaky issues cache
the dependencies and set -o to enable offline mode.

This seems to also speed up the step considerably.

Pick-to: 6.9 6.8 6.5
Change-Id: I01663e60baa44ab828d8880ab8b346034a50b60e
Reviewed-by: Simo Fält <simo.falt@qt.io>

coin/provisioning/common/shared/testserver/californium/Dockerfile

@@ -4,12 +4,13 @@ RUN apt-get update && apt-get -y install $packages
 
 # Get californium-based CoAP test server
 WORKDIR /root/src
-ADD californium-*.tar.gz .
+ADD californium-3.8.0.tar.gz .
 RUN mv californium-* californium
 WORKDIR /root/src/californium
 ADD qt_changes.patch ./
 RUN patch -p1 < qt_changes.patch
-RUN mvn clean install -q -DskipTests
+ADD californium-m2deps-3.8.0.tar.gz /root
+RUN mvn clean install -o -q -DskipTests
 WORKDIR /
 
 EXPOSE 5683/udp 5684/udp

coin/provisioning/common/shared/testserver/docker_images.sh

@@ -60,6 +60,16 @@ DownloadURL  \
     24f8ca393f26c922739462e4586b8ced1ff75f99bfa795defa34a967b5a4a5a0  \
     californium-3.8.0.tar.gz
 mv californium-3.8.0.tar.gz "$SERVER_PATH/californium/"
+# Download cached maven dependencies for californium.
+# The dependency archive is built by
+# "mvn dependency:go-offline -DskipTests -Dos.detected.classifier=linux-x86_64"
+# and archived from /root/.m2
+DownloadURL  \
+    http://ci-files01-hki.ci.qt.io/input/docker/californium-m2deps-3.8.0.tar.gz \
+    http://ci-files01-hki.ci.qt.io/input/docker/californium-m2deps-3.8.0.tar.gz \
+    e2fade7dde3cca02bb910eed99a5d8b5cb8ff945240c65bf06ce50411d70d3f2  \
+    californium-m2deps-3.8.0.tar.gz
+mv californium-m2deps-3.8.0.tar.gz "$SERVER_PATH/californium/"
 
 
 echo 'Building the docker images...'