fix a few isolated dev issues

the main goal of this change is to make `make docker-isolated` work out
of the box

- specify the proper version for awx-expect --version
- update some deprecated playbook bits
- change the isolated container to privileged so bwrap will work
- fix awx-manage test_isolated_connection
- expedite the first isolated heartbeat so you don't have to wait 10m;
  this is accomplished by _not_ setting Instance.last_isolated_check to
  now() at insertion time (which causes the next check not to happen for
  10 minutes)
- fix a bug that caused isolated node execution to fail when bwrap was
  enabled

see: https://github.com/ansible/tower/issues/2150

This reverts commit 9863fe71dc.

Makefile

@@ -219,7 +219,7 @@ init:
 	if [ "$(AWX_GROUP_QUEUES)" == "tower,thepentagon" ]; then \
 		$(MANAGEMENT_COMMAND) provision_instance --hostname=isolated; \
 		$(MANAGEMENT_COMMAND) register_queue --queuename='thepentagon' --hostnames=isolated --controller=tower; \
-		$(MANAGEMENT_COMMAND) generate_isolated_key | ssh -o "StrictHostKeyChecking no" root@isolated 'cat > /root/.ssh/authorized_keys'; \
+		$(MANAGEMENT_COMMAND) generate_isolated_key | ssh -o "StrictHostKeyChecking no" root@isolated 'cat >> /root/.ssh/authorized_keys'; \
 	fi;
 
 # Refresh development environment after pulling new code.
@@ -560,7 +560,7 @@ docker-isolated:
 	TAG=$(COMPOSE_TAG) DEV_DOCKER_TAG_BASE=$(DEV_DOCKER_TAG_BASE) docker-compose -f tools/docker-compose.yml -f tools/docker-isolated-override.yml create
 	docker start tools_awx_1
 	docker start tools_isolated_1
-	echo "__version__ = '`python setup.py --version`'" | docker exec -i tools_isolated_1 /bin/bash -c "cat > /venv/awx/lib/python2.7/site-packages/awx.py"
+	echo "__version__ = '`git describe --long | cut -d - -f 1-1`'" | docker exec -i tools_isolated_1 /bin/bash -c "cat > /venv/awx/lib/python2.7/site-packages/awx.py"
 	if [ "`docker exec -i -t tools_isolated_1 cat /root/.ssh/authorized_keys`" == "`docker exec -t tools_awx_1 cat /root/.ssh/id_rsa.pub`" ]; then \
 		echo "SSH keys already copied to isolated instance"; \
 	else \