Use -f1 (forks) over serial for gate testing

Because we us a single VM for all-in-one testing, switch to forks to
ensure we only run 1 task at a time.

Change-Id: Ia933ec0efc6d04ac02300f3d82faf26cd583d1d1
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

playbooks/bootstrap.yaml

@@ -14,9 +14,6 @@
 ---
 - name: Bootstrap nodes
   hosts: all,!bastion
-  # NOTE(pabelanger): Because we are currently using a single host, we need this
-  # operation to be serial. When we switch to multi-host, this can be removed.
-  serial: 1
 
   pre_tasks:
     - name: Update apt cache
@@ -33,9 +30,6 @@
 
 - name: Bootstrap python dependencies for windmill
   hosts: all,!bastion,!zookeeper
-  # NOTE(pabelanger): Because we are currently using a single host, we need this
-  # operation to be serial. When we switch to multi-host, this can be removed.
-  serial: 1
 
   tasks:
     - name: Setup openstack.virtualenv role

playbooks/nodepool.yaml

@@ -14,11 +14,6 @@
 ---
 - name: Bootstrap nodepool hosts
   hosts: nodepool
-  # TODO(pabelanger): We really don't want to use serial here, but this allows
-  # us to still support a single node install.  What we should do here is expose
-  # some sort of variable to only toggle this when we are doing a single node
-  # install. Otherwise, we just slow down multinode deployments.
-  serial: 1
 
   tasks:
     # NOTE(pabelanger): Because of ordering issues create the required home
@@ -32,11 +27,6 @@
 
 - name: Bootstrap nodepool-builder
   hosts: nodepool-builder
-  # TODO(pabelanger): We really don't want to use serial here, but this allows
-  # us to still support a single node install.  What we should do here is expose
-  # some sort of variable to only toggle this when we are doing a single node
-  # install. Otherwise, we just slow down multinode deployments.
-  serial: 1
 
   tasks:
     - name: Setup openstack.ssh role
@@ -59,11 +49,6 @@
 
 - name: Bootstrap nodepool hosts
   hosts: nodepool
-  # TODO(pabelanger): We really don't want to use serial here, but this allows
-  # us to still support a single node install.  What we should do here is expose
-  # some sort of variable to only toggle this when we are doing a single node
-  # install. Otherwise, we just slow down multinode deployments.
-  serial: 1
 
   tasks:
     - name: Setup openstack.openstacksdk role

playbooks/zuul.yaml

@@ -14,11 +14,6 @@
 ---
 - name: Bootstrap zuul-executor and zuul-scheduler
   hosts: zuul-executor, zuul-scheduler
-  # TODO(pabelanger): We really don't want to use serial here, but this allows
-  # us to still support a single node install.  What we should do here is expose
-  # some sort of variable to only toggle this when we are doing a single node
-  # install. Otherwise, we just slow down multinode deployments.
-  serial: 1
 
   tasks:
     # NOTE(pabelanger): Because of ordering issues create the required home
@@ -36,11 +31,6 @@
 
 - name: Bootstrap zuul-executor
   hosts: zuul-executor
-  # TODO(pabelanger): We really don't want to use serial here, but this allows
-  # us to still support a single node install.  What we should do here is expose
-  # some sort of variable to only toggle this when we are doing a single node
-  # install. Otherwise, we just slow down multinode deployments.
-  serial: 1
 
   tasks:
     # TODO(pabelanger): I'm thinking we should likely create
@@ -53,11 +43,6 @@
 
 - name: Install zuul
   hosts: zuul
-  # TODO(pabelanger): We really don't want to use serial here, but this allows
-  # us to still support a single node install.  What we should do here is expose
-  # some sort of variable to only toggle this when we are doing a single node
-  # install. Otherwise, we just slow down multinode deployments.
-  serial: 1
 
   tasks:
     - name: Setup openstack.zuul role

tests/playbooks/run.yaml

@@ -9,7 +9,7 @@
     - name: Run ansible-playbook for site.yaml
       args:
         chdir: "{{ windmill_src_dir }}"
-      shell: "tox -evenv -- ansible-playbook -i inventory/testing/hosts playbooks/site.yaml -e @{{ windmill_extra_vars_file }}"
+      shell: "tox -evenv -- ansible-playbook -f1 -i inventory/testing/hosts playbooks/site.yaml -e @{{ windmill_extra_vars_file }}"
 
     - name: Run ansible-playbook for prove.yaml
       args: