Fixes to get CT working again in the new datacenter
Do not delete mobile or silk page sets
No new features.

BUG=skia:2930
TBR=jcgregorio

Review URL: https://codereview.chromium.org/729663002
BUG=skia:2930
TBR=jcgregorio

Review URL: https://codereview.chromium.org/732773002