[CICDANSIBLE] Change default node count to 4

Currently ONAP stability is best when at least 4 k8s nodes are used

Change-Id: I9453377d809c797e2bf704293ed48ace2a0f1ae1
Issue-ID: OOM-2846
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
1 file changed