Fix cinder mn-sub mulitnode jobs

These are multinode jobs that don't have multinode in their name so were
missed earlier. Update them to include the multinode base job as parent
for firewall fixes and run the main playbook only on the primary node.

Change-Id: Iba9e4534a3d0eb01ed814c4edf335e634621925e

playbooks/legacy/grenade-dsvm-cinder-mn-sub-bak/run.yaml

@@ -1,4 +1,4 @@
-- hosts: all
+- hosts: primary
   name: Autoconverted job legacy-grenade-dsvm-cinder-mn-sub-bak from old job gate-grenade-dsvm-cinder-mn-sub-bak-ubuntu-xenial-nv
   tasks:
 

playbooks/legacy/grenade-dsvm-cinder-mn-sub-volbak/run.yaml

@@ -1,4 +1,4 @@
-- hosts: all
+- hosts: primary
   name: Autoconverted job legacy-grenade-dsvm-cinder-mn-sub-volbak from old job gate-grenade-dsvm-cinder-mn-sub-volbak-ubuntu-xenial
   tasks:
 

playbooks/legacy/grenade-dsvm-cinder-mn-sub-volschbak/run.yaml

@@ -1,4 +1,4 @@
-- hosts: all
+- hosts: primary
   name: Autoconverted job legacy-grenade-dsvm-cinder-mn-sub-volschbak from old job
     gate-grenade-dsvm-cinder-mn-sub-volschbak-ubuntu-xenial-nv
   tasks:

zuul.d/zuul-legacy-jobs.yaml

@@ -2728,7 +2728,7 @@
 
 - job:
     name: legacy-grenade-dsvm-cinder-mn-sub-bak
-    parent: legacy-dsvm-base
+    parent: legacy-dsvm-base-multinode
     run: playbooks/legacy/grenade-dsvm-cinder-mn-sub-bak/run
     post-run: playbooks/legacy/grenade-dsvm-cinder-mn-sub-bak/post
     timeout: 10800
@@ -2740,7 +2740,7 @@
 
 - job:
     name: legacy-grenade-dsvm-cinder-mn-sub-volbak
-    parent: legacy-dsvm-base
+    parent: legacy-dsvm-base-multinode
     run: playbooks/legacy/grenade-dsvm-cinder-mn-sub-volbak/run
     post-run: playbooks/legacy/grenade-dsvm-cinder-mn-sub-volbak/post
     timeout: 10800
@@ -2752,7 +2752,7 @@
 
 - job:
     name: legacy-grenade-dsvm-cinder-mn-sub-volschbak
-    parent: legacy-dsvm-base
+    parent: legacy-dsvm-base-multinode
     run: playbooks/legacy/grenade-dsvm-cinder-mn-sub-volschbak/run
     post-run: playbooks/legacy/grenade-dsvm-cinder-mn-sub-volschbak/post
     timeout: 10800