bug 1468987: kibana_proxy OOM
bug 1468987: kibana_proxy OOM

We currently set the memory allocated to the kibana-proxy container to be
the same as `max_old_space_size` for nodejs. But in V8, the heap consists
of multiple spaces.

The old space has only memory ready to be GC and measuring the used heap
by kibana-proxy code, there is at least additional 32MB needed in the code
space when `max_old_space_size` peaks.

Setting the default memory limit to 256MB here and also changing the default
calculation of `max_old_space_size` in the image repository to be only half
of what the container receives to allow some heap for other `spaces`.

akubicharm/openshift-ansible,mmahut/openshift-ansible,twiest/openshift-ansible,abutcher/openshift-ansible,ttindell2/openshift-ansible,kwoodson/openshift-ansible,wbrefvem/openshift-ansible,abutcher/openshift-ansible,detiber/openshift-ansible,rjhowe/openshift-ansible,ewolinetz/openshift-ansible,ttindell2/openshift-ansible,twiest/openshift-ansible,jwhonce/openshift-ansible,markllama/openshift-ansible,mmahut/openshift-ansible,mwoodson/openshift-ansible,maxamillion/openshift-ansible,markllama/openshift-ansible,detiber/openshift-ansible,gburges/openshift-ansible,sosiouxme/openshift-ansible,liggitt/openshift-ansible,rhdedgar/openshift-ansible,twiest/openshift-ansible,tagliateller/openshift-ansible,sdodson/openshift-ansible,tagliateller/openshift-ansible,markllama/openshift-ansible,mwoodson/openshift-ansible,akram/openshift-ansible,abutcher/openshift-ansible,maxamillion/openshift-ansible,bparees/openshift-ansible,sosiouxme/openshift-ansible,jwhonce/openshift-ansible,detiber/openshift-ansible,miminar/openshift-ansible,abutcher/openshift-ansible,rjhowe/openshift-ansible,maxamillion/openshift-ansible,openshift/openshift-ansible,bparees/openshift-ansible,aveshagarwal/openshift-ansible,twiest/openshift-ansible,kwoodson/openshift-ansible,akubicharm/openshift-ansible,zhiwliu/openshift-ansible,detiber/openshift-ansible,rhdedgar/openshift-ansible,gburges/openshift-ansible,mmahut/openshift-ansible,miminar/openshift-ansible,ttindell2/openshift-ansible,wbrefvem/openshift-ansible,liggitt/openshift-ansible,EricMountain-1A/openshift-ansible,nak3/openshift-ansible,tagliateller/openshift-ansible,maxamillion/openshift-ansible,akram/openshift-ansible,miminar/openshift-ansible,rjhowe/openshift-ansible,aveshagarwal/openshift-ansible,jwhonce/openshift-ansible,mmahut/openshift-ansible,sosiouxme/openshift-ansible,jwhonce/openshift-ansible,aveshagarwal/openshift-ansible,wbrefvem/openshift-ansible,mmahut/openshift-ansible,zhiwliu/openshift-ansible,tagliateller/openshift-ansible,anpingli/openshift-ansible,markllama/openshift-ansible,ewolinetz/openshift-ansible,rjhowe/openshift-ansible,ttindell2/openshift-ansible,openshift/openshift-ansible,rjhowe/openshift-ansible,miminar/openshift-ansible,anpingli/openshift-ansible,sosiouxme/openshift-ansible,aveshagarwal/openshift-ansible,ttindell2/openshift-ansible,aveshagarwal/openshift-ansible,EricMountain-1A/openshift-ansible,sdodson/openshift-ansible,ewolinetz/openshift-ansible,liggitt/openshift-ansible,zhiwliu/openshift-ansible,akubicharm/openshift-ansible,nak3/openshift-ansible,wbrefvem/openshift-ansible,sdodson/openshift-ansible,liggitt/openshift-ansible,akubicharm/openshift-ansible,maxamillion/openshift-ansible,akubicharm/openshift-ansible,markllama/openshift-ansible,sdodson/openshift-ansible,abutcher/openshift-ansible,liggitt/openshift-ansible,jwhonce/openshift-ansible,detiber/openshift-ansible,ewolinetz/openshift-ansible,miminar/openshift-ansible,EricMountain-1A/openshift-ansible,sosiouxme/openshift-ansible,EricMountain-1A/openshift-ansible,zhiwliu/openshift-ansible,ewolinetz/openshift-ansible,wbrefvem/openshift-ansible,tagliateller/openshift-ansible,sdodson/openshift-ansible,twiest/openshift-ansible,zhiwliu/openshift-ansible,EricMountain-1A/openshift-ansible