Description of problem:

When launched inside chroot, "systemctl is-enabled" returns 0 when it fails to find requested unit. If launch in a real system (not in chroot), it returns 1.  In RHEL 7.2 it always returned 1 and this seemed to be correct behavior.

Version-Release number of selected component (if applicable):
systemd-219-30

How reproducible:
Always

Steps to Reproduce:
1. Install RHEL 7.3
2. Boot from some LiveCD, mount RHEL 7.3 root, bind mount /proc inside it and chroot into it
3. Launch "systemctl is-enabled foo.bar" (provide it with any non-existing unit name)

Actual results:
systemctl prints "no such file or directory" but returns 0.

Expected results:
systemctl exits with non-zero status.

Additional info:
Setting "SYSTEMD_IGNORE_CHROOT" variable makes systemctl return 1, but this seems to be an ugly workaround, not a real solution.