[ovs] Start ovs services before networking

Fix broken systemd service unit dependecies:
- OVS should start before networking service;
- OVS ports & bridges should not be automatically ifup-ed by
  networking service to avoid races, so drop 'auto' for both
  (OVS ports are automatically handled when part of an OVS bridge);
- explicitly ifup OVS bridges as part of networking service, but
  after all Linux interfaces have been handled;
- use 'allow-ovs br-prv' to let OVS handle br-prv and avoid another
  race condition;

While at it, fix some other related issues:
- make OVS service start after DPDK service (if present);
- bump OVS-DPDK compute VMs RAM since since switching from MTU 1500
  to jumbo frames for virtual PODs a while ago failed to do so [1];
- avoid creating conflicting reclass linux.network.interfaces entries
  for OVS ports by using their name (drop 'ovs_port_' prefix):
  * for untagged networks they will override existing common defs;
  * for tagged networks, they will create separate entries;
- DPDK scenarios: make gtw01 br-prv members OVS ports to avoid race
  conditions after node reboot by letting OVS handle them;

[1] https://developers.redhat.com/blog/2018/03/16/\
    ovs-dpdk-hugepage-memory/

Change-Id: I0266ba67f3849b6f7e331a758146b331730bae55
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

3 files changed, 6 insertions, 6 deletions

diff --git a/mcp/config/scenario/os-nosdn-ovs-ha.yaml b/mcp/config/scenario/os-nosdn-ovs-ha.yaml
index 57f2140bb..e42d17210 100644
--- a/mcp/config/scenario/os-nosdn-ovs-ha.yaml
+++ b/mcp/config/scenario/os-nosdn-ovs-ha.yaml
@@ -37,7 +37,7 @@ virtual:
     ram: 14336
   cmp001:
     vcpus: 4
-    ram: 8192
+    ram: 10240
   cmp002:
     vcpus: 4
-    ram: 8192
+    ram: 10240
diff --git a/mcp/config/scenario/os-nosdn-ovs-noha.yaml b/mcp/config/scenario/os-nosdn-ovs-noha.yaml
index 15cad1d29..de8873daf 100644
--- a/mcp/config/scenario/os-nosdn-ovs-noha.yaml
+++ b/mcp/config/scenario/os-nosdn-ovs-noha.yaml
@@ -28,7 +28,7 @@ virtual:
     ram: 2048
   cmp001:
     vcpus: 4
-    ram: 8192
+    ram: 10240
   cmp002:
     vcpus: 4
-    ram: 8192
+    ram: 10240
diff --git a/mcp/config/scenario/os-odl-ovs-noha.yaml b/mcp/config/scenario/os-odl-ovs-noha.yaml
index e2df6a476..0731198db 100644
--- a/mcp/config/scenario/os-odl-ovs-noha.yaml
+++ b/mcp/config/scenario/os-odl-ovs-noha.yaml
@@ -33,7 +33,7 @@ virtual:
     ram: 5120
   cmp001:
     vcpus: 4
-    ram: 8192
+    ram: 10240
   cmp002:
     vcpus: 4
-    ram: 8192
+    ram: 10240