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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
---
M open5gs-master/Dockerfile
M ttcn3-ggsn-test/ogs/open5gs-smf.yaml
M ttcn3-pgw-test/open5gs-smf.yaml
3 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/open5gs-master/Dockerfile b/open5gs-master/Dockerfile
index 1aea492..54c7fd1 100644
--- a/open5gs-master/Dockerfile
+++ b/open5gs-master/Dockerfile
@@ -7,6 +7,7 @@
     apt-get upgrade -y && \
     DEBIAN_FRONTEND=noninteractive \
     apt-get install -y --no-install-recommends \
+        cmake \
         vim \
         sudo \
         iproute2 \
@@ -53,4 +54,5 @@
         --localstatedir=/var \
         --libdir=lib/x86_64-linux-gnu \
         --libexecdir=lib/x86_64-linux-gnu && \
+    meson configure -Dmetrics_impl=prometheus build && \
     ninja -C build install
diff --git a/ttcn3-ggsn-test/ogs/open5gs-smf.yaml b/ttcn3-ggsn-test/ogs/open5gs-smf.yaml
index 3ee3b04..9d47250 100644
--- a/ttcn3-ggsn-test/ogs/open5gs-smf.yaml
+++ b/ttcn3-ggsn-test/ogs/open5gs-smf.yaml
@@ -533,3 +533,17 @@
 #    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
diff --git a/ttcn3-pgw-test/open5gs-smf.yaml b/ttcn3-pgw-test/open5gs-smf.yaml
index 5e8cf1b..b637aee 100644
--- a/ttcn3-pgw-test/open5gs-smf.yaml
+++ b/ttcn3-pgw-test/open5gs-smf.yaml
@@ -521,3 +521,17 @@
 #    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

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