[v0.13.x] Configurable CoreDNS TTL

[dominicgunn]

Changes

• Allows a configurable TTL for CoreDNS.

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[codecov-io]

Codecov Report

Merging #1625 into v0.13.x will decrease coverage by 0.33%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##           v0.13.x    #1625      +/-   ##
===========================================
- Coverage    25.54%   25.21%   -0.34%     
===========================================
  Files           98       98              
  Lines         5038     5426     +388     
===========================================
+ Hits          1287     1368      +81     
- Misses        3608     3910     +302     
- Partials       143      148       +5

Impacted Files	Coverage Δ
pkg/api/types.go	0% <ø> (ø)	⬆️
pkg/api/cluster.go	0% <0%> (ø)	⬆️
pkg/model/stack_new.go	30.41% <0%> (-3.45%)	⬇️
pkg/api/controller.go	0% <0%> (ø)	⬆️
pkg/api/worker_node_pool.go	15.06% <0%> (+2.67%)	⬆️
pkg/model/node_pool_compile.go	64.35% <0%> (+5.14%)	⬆️
credential/store.go	48% <0%> (+5.89%)	⬆️
pkg/api/etcd.go	39.43% <0%> (+8.11%)	⬆️
... and 1 more

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[davidmccormick]

Great, many thanks - looks good!