Disable not needed services in grenade jobs

Things like swift, cinder and etcd aren't needed in neutron
grenade jobs so lets try to disable it to save some resources on test
node.

Change-Id: Id9dd91b50506670da8fb7485e2adbd5b9b6031b4

playbooks/legacy/neutron-grenade-dvr-multinode/run.yaml

@@ -41,6 +41,18 @@
           fi
           export DEVSTACK_GATE_TOPOLOGY="multinode"
 
+          # Disable some services to use less memory
+          # Cinder-backup
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service c-bak"
+          # Etcd
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service etcd3"
+          # Swift
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-account"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-container"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-container-sync"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-object"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-proxy"
+
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
           ./safe-devstack-vm-gate-wrap.sh
         executable: /bin/bash

playbooks/legacy/neutron-grenade-multinode/run.yaml

@@ -41,6 +41,18 @@
           fi
           export DEVSTACK_GATE_TOPOLOGY="multinode"
 
+          # Disable some services to use less memory
+          # Cinder
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service c-bak"
+          # Etcd
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service etcd3"
+          # Swift
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-account"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-container"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-container-sync"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-object"
+          export DEVSTACK_LOCAL_CONFIG+=$'\n'"disable_service s-proxy"
+
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
           ./safe-devstack-vm-gate-wrap.sh
         executable: /bin/bash