MT#13903 Disable test api-balanceintervals.t for Jenkins environment

We have to enable test explicitly using config.yml:
> $yaml->[0]->{www_admin}->{api_debug_opts}->{allow_fake_client_time} = 1;
> $yaml->[0]->{www_admin}->{api_debug_opts}->{allow_delay_commit} = 1;

Otherwise the test api-balanceintervals.t will be skipped.

Change-Id: I280e0199fa5957ad01bc3a59b64188f80a37635e

t/api-balanceintervals.t

@@ -23,7 +23,7 @@ BEGIN {
 }
 use NGCP::Panel::Utils::DateTime qw();
 
-my $is_local_env = 1;
+my $is_local_env = 0;
 
 
 use Config::General;