Scale Diego cells in London to 48
Scale Diego cells in London to 48

Scaling due to low free mem alert for diego cells. Our chart also shows that
it's time to increase the number of cells.

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf