osmo-gsm-tester: open5gs deps only for x86_64

mongo-db is only available for x86_64 from their third party
repository. Don't attempt to install it for another architecture. As
this is part of the open5gs dependencies, don't install any of them
either.

This should fix the currently failing "update-osmo-ci-on-slaves"
jenkins job. I've considered disabling the build of the osmo-gsm-tester
container for ARM altogether, but the osmo-gsm-tester manual explicitly
mentions ARM trails.

Change-Id: Ieed36b1adf4b9ae147c7ee7ade22d4855c3dbac8

osmo-gsm-tester/Dockerfile

@@ -114,41 +114,48 @@ RUN	apt-get update && \
 # install open5gs dependencies: (mongodb not available in Debian)
 # systemctl stuff: workaround for https://jira.mongodb.org/browse/SERVER-54386
 ADD	https://www.mongodb.org/static/pgp/server-4.4.asc /tmp/mongodb-server-4.4.asc
-RUN	apt-key add /tmp/mongodb-server-4.4.asc && \
-	echo "deb http://repo.mongodb.org/apt/debian buster/mongodb-org/4.4 main" > /etc/apt/sources.list.d/mongodb-org-4.4.list
-RUN	apt-get update && \
-	systemctl_path=$(which systemctl) && \
-	mv $systemctl_path /tmp/systemctl && \
-	apt-get install -y --no-install-recommends mongodb-org && \
-	apt-get clean && \
-	mv /tmp/systemctl $systemctl_path && \
-	sed -i "s/127.0.0.1/$OGT_MASTER_ADDR/g" /etc/mongod.conf
+RUN	if [ "$(arch)" = "x86_64" ]; then \
+		apt-key add /tmp/mongodb-server-4.4.asc && \
+		echo "deb http://repo.mongodb.org/apt/debian buster/mongodb-org/4.4 main" \
+			> /etc/apt/sources.list.d/mongodb-org-4.4.list; \
+	fi
+RUN	if [ "$(arch)" = "x86_64" ]; then \
+		apt-get update && \
+		systemctl_path=$(which systemctl) && \
+		mv $systemctl_path /tmp/systemctl && \
+		apt-get install -y --no-install-recommends mongodb-org && \
+		apt-get clean && \
+		mv /tmp/systemctl $systemctl_path && \
+		sed -i "s/127.0.0.1/$OGT_MASTER_ADDR/g" /etc/mongod.conf; \
+	fi
 
 # install open5gs dependencies:
-RUN	apt-get update && \
-	apt-get install -y --no-install-recommends \
-		python3-pip \
-		python3-setuptools \
-		python3-wheel \
-		ninja-build \
-		build-essential \
-		flex \
-		bison \
-		git \
-		libsctp-dev \
-		libgnutls28-dev \
-		libgcrypt-dev \
-		libssl-dev \
-		libidn11-dev \
-		libmongoc-dev \
-		libbson-dev \
-		libyaml-dev \
-		libnghttp2-dev \
-		libmicrohttpd-dev \
-		libcurl4-gnutls-dev \
-		libnghttp2-dev \
-		meson && \
-	apt-get clean
+RUN	if [ "$(arch)" = "x86_64" ]; then \
+		apt-get update && \
+		apt-get install -y --no-install-recommends \
+			python3-pip \
+			python3-setuptools \
+			python3-wheel \
+			ninja-build \
+			build-essential \
+			flex \
+			bison \
+			git \
+			libsctp-dev \
+			libgnutls28-dev \
+			libgcrypt-dev \
+			libssl-dev \
+			libidn11-dev \
+			libmongoc-dev \
+			libbson-dev \
+			libyaml-dev \
+			libnghttp2-dev \
+			libmicrohttpd-dev \
+			libcurl4-gnutls-dev \
+			libnghttp2-dev \
+			meson && \
+		apt-get clean; \
+	fi
 
 WORKDIR	/tmp