functional tests: skip TestSocketProxyd
functional tests: skip TestSocketProxyd

This test is currently racy. The socket-activated proxyd service depends
on a rkt service being ready. However, the application that runs inside
rkt doesn't have a way to signal when it's ready because of
https://github.com/coreos/rkt/issues/1464. Instead, systemd assumes it's
ready when the container starts, which is wrong, because the application
inside might not be listening on the port yet. This makes the test fail.

It fails a lot particularly in Fedora Rawhide with the flavor host:

https://jenkins-rkt-public.prod.coreos.systems/job/rkt-master-periodic/os_type=fedora-rawhide,stage1_flavor=host/

We can re-enable it when we fix https://github.com/coreos/rkt/issues/1464.

joshix/rkt,nhlfr/rkt,s-urbaniak/rkt,cab105/rkt,cab105/rkt,Shashwatsh/rkt,lucasallan/rkt,euank/rkt,cab105/rkt,shobhit85/rkt,squeed/rkt,Wilybald/rkt,lucasallan/rkt,alban/rkt,sstabellini/rkt,jakon89/rkt,Shashwatsh/rkt,sstabellini/rkt,Shashwatsh/rkt,yifan-gu/rkt,yifan-gu/rocket,nhlfr/rkt,intelsdi-x/rkt,lucasallan/rkt,yifan-gu/rocket,kinvolk/rkt,s-urbaniak/rkt,jakon89/rkt,joshix/rkt,squeed/rkt,Wilybald/rkt,alban/rkt,alban/rkt,s-urbaniak/rkt,yifan-gu/rkt,Wilybald/rkt,coreos/rkt,kinvolk/rkt,coreos/rkt,coreos/rkt,ybubnov/rkt,Wilybald/rkt,intelsdi-x/rkt,dgonyeo/rkt,nhlfr/rkt,yifan-gu/rkt,joshix/rkt,dgonyeo/rkt,shobhit85/rkt,intelsdi-x/rkt,rkt/rkt,lucasallan/rkt,jonboulle/rkt,kinvolk/rkt,achanda/rkt,euank/rkt,jonboulle/rkt,ybubnov/rkt,dgonyeo/rkt,achanda/rkt,squeed/rkt,rkt/rkt,sstabellini/rkt,euank/rkt,kinvolk/rkt,joshix/rkt,achanda/rkt,rkt/rkt,shobhit85/rkt,ybubnov/rkt,jonboulle/rkt,jakon89/rkt,yifan-gu/rocket,rkt/rkt