Install newer mod-influxdb + use __host__ as service desc

Change-Id: I501e307ec7b0c5c80d38e9e3c7d139806255262d

surveil/api/handlers/status/metrics/metric_name_handler.py

@@ -21,7 +21,7 @@ class MetricNameHandler(handler.Handler):
 
     def get(self, host_name, service_description=None):
         """Return all metrics name."""
-        service_description = service_description or ''
+        service_description = service_description or '__host__'
         query = ("SHOW measurements WHERE host_name='%s' "
                  "AND service_description='%s'"
                  % (host_name, service_description))

surveil/tests/api/controllers/v2/status/test_hosts_metric.py

@@ -182,5 +182,5 @@ class TestHostMetric(functionalTest.FunctionalTest):
             self.assertEqual(
                 m.last_request.qs['q'],
                 ["show measurements where host_name='ws-arbiter' "
-                 "and service_description=''"]
+                 "and service_description='__host__'"]
             )

tools/docker/alignak_container/Dockerfile

@@ -42,7 +42,7 @@ RUN cd /tmp && \
 # mod-influxdb
 RUN pip install influxdb==2.8.0
 RUN cd /tmp && \
-    wget -O mod-influxdb.tar.gz https://github.com/savoirfairelinux/mod-influxdb/archive//92b1ccbd670991c495c71c0914a1fb0b18676bb6.tar.gz && \
+    wget -O mod-influxdb.tar.gz https://github.com/savoirfairelinux/mod-influxdb/archive/9433b726492a09d5faeb70abfc5efdbf1728686f.tar.gz && \
     tar -zxvf mod-influxdb.tar.gz && \
     mv /tmp/mod-influxdb-*/module /var/lib/alignak/modules/mod-influxdb && \
     rm -rfv /tmp/mod-influxdb*