perlcritic: use strict, use warnings

t/Controller/Jobset/channel.t

@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 use IO::Uncompress::Bunzip2 qw(bunzip2);
 use Archive::Tar;

t/Controller/Jobset/evals.t

@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use Data::Dumper;
 my %ctx = test_init();

t/Controller/Jobset/http.t

@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 use JSON qw(decode_json encode_json);
 

t/Controller/Jobset/type-constraints.t

@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 my %ctx = test_init();