remove tools/jenkins

The last non bashate change in this directory was from 2012, which
means I assume nothing down here is useful any more as this is largely
the precursor to devstack-gate.

Remove it for cleanliness reasons and to not confuse people setting
up 3rd party ci.

Change-Id: I54f06c2ff5a49a9f811df07a7cdfda4a675953c8
scope warnings to only display if the services are enabled

On my devstack environments I'm now always getting the Q_AGENT
warnings even though I don't have neutron enabled. This is mostly
confusing.

For these juno warnings lets just make sure that the whole thing
only prints out in the case where we've actually got that service
enabled.

Change-Id: I7d1bb2e65594c8bee2f572ca58a1b666e5d6caed
Merge "scope warnings to only display if the services are enabled"
Merge "remove tools/jenkins"
Merge "Additional Cinder backend: solidfire"
Take a swing at processes without screen

So close.   Soooooo close before.  The problems reduced to getting
the PID at the right place and setting the pgid properly.

This introduces run_service() and screen_service() and sets the groundwork
to change how DevStack starts services.  screen_service() is simply
a direct call to the screen portion of the old screen_it() function
and is intended to run commands that only need to run under screen,
such as log file watchers.

run_service() is a replacement for screen_it() (which remains until
all of the services are updated).  The usage is similar but requires
updates to every current screen_it() call to remove everything that
requires the command to be interpreted by a shell.

I included the scripts I used to test this; tests/fake-service.sh and
tests/run-process.sh are quite rough around the edges and may bite.  They
should mature into productive members of the testing ecosystem someday.

Change-Id: I03322bf0208353ebd267811735c66f13a516637b
Merge branch 'cinder-backend-netapp' into dt-test
Merge branch 'kill-kill-kill' into dt-test
Merge branch 'erlang-b-gone' into dt-test
Merge branch 'conf-tempest' into dt-test
Merge branch 'test-service-functions' into dt-test
Merge branch 'exercise-refresh' into dt-test