Upgrade Monasca to InfluxDB 1.7

Monasca now supports InfluxDB 1.7, the current version provided by
Kolla. We no longer need to build an old version for Monasca.

Depends-On: https://review.opendev.org/#/c/658330
Change-Id: I5a86405901139d643172835acb89f55b14bfedbf

contrib/template-override/monasca-template-overrides.j2

@@ -1,3 +0,0 @@
-{% extends parent_template %}
-
-{% set influxdb_packages_override = ["influxdb-1.3.7"] %}

doc/source/admin/template-override/monasca.rst

@@ -1,18 +0,0 @@
-==============================================
-Building non-standard Monasca container images
-==============================================
-
-The `monasca-template-overrides.j2` file shows how to build
-any images required for Monasca which are non-standard. Currently this
-includes only InfluxDB. When Monasca is upgraded this file will
-no longer be required.
-
-InfluxDB
---------
-
-Build the container by executing the following command:
-
-.. code-block:: console
-
-   kolla-build --template-override contrib/template-override/monasca-template-overrides.j2 influxdb
-

releasenotes/notes/upgrade-influxdb-for-monasca-202f3cf22ff8597e.yaml

@@ -0,0 +1,12 @@
+---
+upgrade:
+  - |
+    Monasca now supports InfluxDB 1.7.x, the default version provided by Kolla.
+    Monasca users can follow the InfluxDB upgrade notes in the guide:
+    https://docs.influxdata.com/influxdb/v1.7/administration/upgrading/
+security:
+  - In prior versions of InfluxDB, including 1.3.x, InfluxDB incorrectly
+    ignored tag names starting with a leading underscore. In Monasca
+    this broke tenant isolation because queries containing
+    `where _tenant_id = 'some_id'` where not scoped to the tenant_id.
+    Upgrading to InfluxDB 1.7.x solves this issue.