Description of problem:
When you try to access docker CR via TCP you get "Permission denied - connect(2) for 127.0.0.1:2375 (Errno::EACCES)"
The passenger connection is denied producing following AVC:

type=AVC msg=audit(1514988360.074:3530): avc:  denied  { name_connect } for  pid=5052 comm="diagnostic_con*" dest=2375 scontext=system_u:system_r:passenger_t:s0 tcontext=system_u:object_r:container_port_t:s0 tclass=tcp_socket


Version-Release number of selected component (if applicable):
satellite-6.3.0-23.0.el7sat.noarch
foreman-selinux-1.15.5-1.el7sat.noarch


How reproducible:
deterministic

Steps to Reproduce:
1. Have a Satellite and Docker CR accessible via TCP 

2. If the CR is external install also container-selinux

3. Due to BZ #1527052 (slated for rhel-7.5.0) assign 2375/tcp port to container_port_t label since the label is missing any port assigments
# semanage port -a -t container_port_t -p tcp 2375

You have to have the port assigned to the container_port_t label 
# semanage port -l |grep -e container
container_port_t               tcp      2375

4. Try to connect to localhost:2375 or external_docker_host:2375 (by "Test Connection" in UI)

Actual results:
connection denied

Expected results:
connection succeeds

Additional info:
The boolean passenger_can_connect_docker_tcp that should be related is turned on still connection is denied

passenger_can_connect_all      (off  ,  off)  Allow passenger to can connect all
passenger_can_connect_docker_unix (on   ,   on)  Allow passenger to can connect docker unix
passenger_can_connect_docker_tcp (on   ,   on)  Allow passenger to can connect docker tcp