test if dhcpcd can read the /run/netns directory
    
    A recent dhcpcd + selinux-policy testing revealed that SELinux
    prevents the dhcpcd processes from reading the /run/netns directory
    when it exists. The TC reproduces the situation.
    
    In order to support the expected dhcpcd functionality, I believe
    that SELinux policy should allow the access. The TC looks for
    appropriate policy rules and file context patterns.
    
    The TC covers BZ#2269708 and BZ#2270733.