Unit test fails in develop branch

[matsduf]

I have installed develop branch of Zonemaster-LDNS (zonemaster/zonemaster-ldns@f0b7b0a) and Zonemaster-Engine (zonemaster/zonemaster-engine@760f9ea) and try to install a Zonemaster-Backend package from develop branch (dfb8665). When I run the unit tests I get the following error:

t/test01.t ................. # not recording
t/test01.t ................. 1/?     # running the agent on test 1ea22028f16ca7f5
t/test01.t ................. 2/? 
        #   Failed test 'Has correct DS values'
        #   at t/test01.t line 205.
        #     Structures begin differing at:
        #          $got->{keytag} = '29133'
        #     $expected->{keytag} = '51508'
        # Looks like you failed 1 test of 16.

    #   Failed test 'get_data_from_parent_zone'
    #   at t/test01.t line 206.
    # Looks like you failed 1 test of 6.

#   Failed test 'API calls'
#   at t/test01.t line 208.
# running the agent on test 4b926581a879494c
t/test01.t ................. 4/?         # running the agent on test 10222cc72c951c3f
t/test01.t ................. 5/?     # running the agent on test 83eb3b329bdc99c2
    # running the agent on test 65d77bef465d6438
    # running the agent on test 84e18259dfbabcf0
t/test01.t ................. 7/? # Looks like you failed 1 test of 8.
t/test01.t ................. Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/8 subtests 
(...)
Test Summary Report
-------------------
t/test01.t               (Wstat: 256 (exited 1) Tests: 8 Failed: 1)
  Failed test:  3
  Non-zero exit status: 1
Files=14, Tests=75, 47 wallclock secs ( 0.12 usr  0.02 sys + 12.52 cusr  1.23 csys = 13.89 CPU)
Result: FAIL
Failed 1/14 test programs. 1/75 subtests failed.
*** Error code 255

PR #1190 also fails.

The combination of the following triggers the issue:

1. t/test01.t sends external queries even when the network should be off. The responses on those external queries overwrites the recorded data.
2. There has been changes on live .fr that make it not match the expected values.

[matsduf]

Will be fixed by #1192.