Change default deployment strategy for each product chart

[tnederlof]

Each of the product helm charts has a default value of strategy.type: "RollingUpdate" which may not be appropriate since new product versions could have database migrations and don't support the rolling update style of running two product version simultaneously. We should consider changing this default to Recreate

[edavidaja]

see also: #424

[NicholasRaymondiSpot]

Valid suggestion, why was it closed?