TT#109000 Remove hardcoded values from tests parameters

These variables are defined in testrunner so we should not redefine them
in code, only in case if they aren't defined for some reason.

Change default to 127.0.0.1 as it's the only value which has some
meaning.

Remove commented lines.

Change-Id: Icca03215ff854bb2dffe3d3e308445ef5debb9e8

t/Utils/Env.pm

@@ -13,12 +13,10 @@ our @EXPORT_OK = qw(
 );
 
 ## no critic (Variables::RequireLocalizedPunctuationVars)
-$ENV{RATEOMAT_BILLING_DB_HOST} = '192.168.0.181';
-$ENV{RATEOMAT_PROVISIONING_DB_HOST} = '192.168.0.181';
-$ENV{RATEOMAT_ACCOUNTING_DB_HOST} = '192.168.0.181';
-#$ENV{RATEOMAT_DUPLICATE_DB_HOST} = '192.168.0.29';
-
-$ENV{CATALYST_SERVER} = 'https://127.0.0.1:1443';
+$ENV{RATEOMAT_BILLING_DB_HOST}      //= '127.0.0.1';
+$ENV{RATEOMAT_PROVISIONING_DB_HOST} //= '127.0.0.1';
+$ENV{RATEOMAT_ACCOUNTING_DB_HOST}   //= '127.0.0.1';
+$ENV{CATALYST_SERVER}               //= 'https://127.0.0.1:1443';
 
 sub set_local_timezone {
 	(my $tz,$ENV{RATEOMAT_CONNECTION_TIMEZONE}) = @_;