Revert "Set OVH max-servers to 0"

We've received word back that our account has been reenabled.

This reverts commit 4c2d691a83.

Change-Id: I17633723cca072e01b7a1e1cafcc61ec741a581b

nodepool/nodepool.yaml

@@ -439,7 +439,7 @@ providers:
     cloud: ovh
     api-timeout: 60
     boot-timeout: 120
-    max-servers: 0
+    max-servers: 79
     rate: 0.1
     image-type: 'qcow2'
     template-hostname: '{image.name}-{timestamp}'
@@ -497,7 +497,7 @@ providers:
     cloud: ovh
     api-timeout: 60
     boot-timeout: 120
-    max-servers: 0
+    max-servers: 159
     rate: 0.1
     image-type: 'qcow2'
     template-hostname: '{image.name}-{timestamp}'