zdtm: Split long .desc lines

Done with python pprint module (indent = 4, width = 80)
for files with more than one field in and with length
exceeding 80 characters.

Travised-by: https://travis-ci.org/xemul/criu/jobs/171350152
travis-ci: success for zdtm: Split long .desc lines
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

test/zdtm/static/cr_veth.desc

-{'flavor': 'ns uns', 'deps': [ '/bin/sh', '/bin/sed', '/bin/grep', '/sbin/ip', '/usr/bin/diff'], 'flags': 'suid', 'ropts': '--external veth[zdtmvthc0]:zdtmvthh0@zdtmbr0'}
+{   'deps': ['/bin/sh', '/bin/sed', '/bin/grep', '/sbin/ip', '/usr/bin/diff'],
+    'flags': 'suid',
+    'flavor': 'ns uns',
+    'ropts': '--external veth[zdtmvthc0]:zdtmvthh0@zdtmbr0'}

test/zdtm/static/macvlan.desc

-{'flavor': 'ns uns', 'deps': [ '/bin/sh', '/usr/bin/sort', '/bin/grep', '/sbin/ip', '/usr/bin/diff'], 'flags': 'suid', 'ropts': '--external macvlan[zdtmmvlan0]:zdtmbr0'}
+{   'deps': [   '/bin/sh',
+                '/usr/bin/sort',
+                '/bin/grep',
+                '/sbin/ip',
+                '/usr/bin/diff'],
+    'flags': 'suid',
+    'flavor': 'ns uns',
+    'ropts': '--external macvlan[zdtmmvlan0]:zdtmbr0'}