devstack: remove jaeger container on unstack

Let's remove the docker container created with Jaeger Tracing when
unstacking, this avoid `./stack.sh` to fail when recreating the
environnement mentioning that a docker container named jaeger already
exists.

Signed-off-by: Sahid Orentino Ferdjaoui <sahid.ferdjaoui@industrialdiscipline.com>
Change-Id: I785c7b23be92eb5bc4da0366f705a77c3910d5c2

devstack/lib/osprofiler

@@ -71,6 +71,10 @@ function install_jaeger() {
     pip_install jaeger-client
 }
 
+function drop_jaeger() {
+    sg docker -c 'docker rm jaeger --force'
+}
+
 function install_elasticsearch() {
     if is_ubuntu; then
         install_package docker.io

devstack/plugin.sh

@@ -19,6 +19,11 @@ elif [[ "$1" == "stack" && "$2" == "test-config" ]]; then
     echo_summary "Configuring Tempest"
     configure_osprofiler_in_tempest
 
+elif [[ "$1" == "unstack" ]]; then
+    if [[ "$OSPROFILER_COLLECTOR" == "jaeger" ]]; then
+        echo_summary "Deleting jaeger docker container"
+        drop_jaeger
+    fi
 fi
 
 # Restore xtrace

releasenotes/notes/drop-jaeger-container-when-unstacking-e8fcdc036f80158a.yaml

@@ -0,0 +1,7 @@
+---
+issues:
+  - |
+    Using devstack, when unstacking, the docker container running
+    Jaeger tracing will be deleted that to correctly clean processes
+    started by devstack.. This also avoid `./stack.sh` to fail when
+    recreating the environnement.