open5gs: Enable libmetrics prometheus implementation

metrics support using Prometheus has been recently added to open5gs
(28e40a0f1b9048768958344e213c69994be671f5). However, it is still not
enabled by default. Let's enable it and update open5gs config files to
make use of it.

Change-Id: I6ec827d66241e20d631f3a851457921718c168a0

open5gs-master/Dockerfile

@@ -7,6 +7,7 @@ RUN apt-get update && \
     apt-get upgrade -y && \
     DEBIAN_FRONTEND=noninteractive \
     apt-get install -y --no-install-recommends \
+        cmake \
         vim \
         sudo \
         iproute2 \
@@ -53,4 +54,5 @@ RUN cd $GITHUB_REPO && \
         --localstatedir=/var \
         --libdir=lib/x86_64-linux-gnu \
         --libexecdir=lib/x86_64-linux-gnu && \
+    meson configure -Dmetrics_impl=prometheus build && \
     ninja -C build install

ttcn3-ggsn-test/ogs/open5gs-smf.yaml

@@ -533,3 +533,17 @@ pool:
 #    handover:
 #        duration: 500
 time:
+
+#
+# metrics:
+#
+#  <Metrics Server>
+#
+#  o Metrics Server(http://<any address>:9090)
+#    metrics:
+#      addr: 0.0.0.0
+#      port: 9090
+#
+metrics:
+    addr: 172.18.3.201
+    port: 9090

ttcn3-pgw-test/open5gs-smf.yaml

@@ -521,3 +521,17 @@ pool:
 #    handover:
 #        duration: 500
 time:
+
+#
+# metrics:
+#
+#  <Metrics Server>
+#
+#  o Metrics Server(http://<any address>:9090)
+#    metrics:
+#      addr: 0.0.0.0
+#      port: 9090
+#
+metrics:
+    addr: 172.18.18.4
+    port: 9090