*: add test of mixin addition in examples/; change config to `_config` in addMixin to be consistent with main components

jsonnet/components: fix missing resource config in blackbox exporter

jsonnet/kube-prometheus/addons: fix KSM regex patterns

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

jsonnet: use common to populate options for additional objects

Add PodDisruptionBudget to prometheus-adapter

Adding a PodDisruptionBudget to prometheus-adapter ensure that at least
one replica of the adapter is always available. This make sure that even
during disruption the aggregated API is available and thus does not
impact the availability of the apiserver.

Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com>

addons: hide antiaffinity function

can change grafanaImage over $.values.common.images

Export anti-affinity addon

jsonnet: pin alertmanager to specific commit

Signed-off-by: paulfantom <pawel@krupa.net.pl>

Export the antiaffinity function of the anti-affinity addon to make it
possible to extend the addon to component that are not present in the
kube-prometheus stack.

Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com>

*: cut release-0.8

Signed-off-by: paulfantom <pawel@krupa.net.pl>

examples: add anti-affinity example and include it in readme