tests: increase `mon_max_pg_per_osd`

we aren't deploying enough OSD daemon, so it fails like following:

```
  stderr: 'Error ERANGE: pool id 10 pg_num 256 size 2 would mean 1536 total pgs, which exceeds max 1500 (mon_max_pg_per_osd 250 * num_in_osds 6)'
```

Let's increase the value of `mon_max_pg_per_osd` in order to get around
this issue in the CI.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit 682116023d)

tests/functional/all-in-one/container/group_vars/all

@@ -20,6 +20,7 @@ ceph_conf_overrides:
     mon_allow_pool_size_one: true
     mon_warn_on_pool_no_redundancy: false
     osd_pool_default_size: 1
+    mon_max_pg_per_osd: 300
 handler_health_mon_check_delay: 10
 handler_health_osd_check_delay: 10
 rgw_create_pools:

tests/functional/all-in-one/group_vars/all

@@ -17,6 +17,7 @@ ceph_conf_overrides:
     mon_allow_pool_size_one: true
     mon_warn_on_pool_no_redundancy: false
     osd_pool_default_size: 1
+    mon_max_pg_per_osd: 300
 handler_health_mon_check_delay: 10
 handler_health_osd_check_delay: 10
 osd_objectstore: "bluestore"

tests/functional/all_daemons/ceph-override.json

@@ -4,7 +4,8 @@
       "osd_pool_default_pg_num": 12,
       "osd_pool_default_size": 1,
       "mon_allow_pool_size_one": true,
-      "mon_warn_on_pool_no_redundancy": false
+      "mon_warn_on_pool_no_redundancy": false,
+      "mon_max_pg_per_osd": 300
     }
   },
   "cephfs_pools": [

tests/functional/all_daemons/container/group_vars/all

@@ -16,6 +16,7 @@ ceph_conf_overrides:
     mon_allow_pool_size_one: true
     mon_warn_on_pool_no_redundancy: false
     osd_pool_default_size: 1
+    mon_max_pg_per_osd: 300
 openstack_config: True
 openstack_glance_pool:
   name: "images"

tests/functional/all_daemons/group_vars/all

@@ -9,6 +9,7 @@ ceph_conf_overrides:
     mon_allow_pool_size_one: true
     mon_warn_on_pool_no_redundancy: false
     osd_pool_default_size: 1
+    mon_max_pg_per_osd: 300
 openstack_config: True
 openstack_glance_pool:
   name: "images"

tests/functional/collocation/container/group_vars/all

@@ -18,6 +18,7 @@ ceph_conf_overrides:
     mon_allow_pool_size_one: true
     mon_warn_on_pool_no_redundancy: false
     osd_pool_default_size: 1
+    mon_max_pg_per_osd: 300
 handler_health_mon_check_delay: 10
 handler_health_osd_check_delay: 10
 dashboard_admin_password: $sX!cD$rYU6qR^B!

tests/functional/collocation/group_vars/all

@@ -15,6 +15,7 @@ ceph_conf_overrides:
     mon_allow_pool_size_one: true
     mon_warn_on_pool_no_redundancy: false
     osd_pool_default_size: 1
+    mon_max_pg_per_osd: 300
 handler_health_mon_check_delay: 10
 handler_health_osd_check_delay: 10
 dashboard_admin_password: $sX!cD$rYU6qR^B!