Explicitly create the base DN we use in tests

Net::LDAP::Server::Test 0.16 requires that the base DN exist or it
throws an "Object not found" LDAP error.  Tests now pass under this
version.

t/group-import.t

@@ -17,6 +17,7 @@ ok( my $server = Net::LDAP::Server::Test->new( $ldap_port, auto_schema => 1 ),
     "spawned test LDAP server on port $ldap_port");
 my $ldap = Net::LDAP->new("localhost:$ldap_port");
 $ldap->bind();
+$ldap->add("dc=bestpractical,dc=com");
 
 my @ldap_user_entries;
 for ( 1 .. 12 ) {

t/user-import-cfs.t

@@ -33,6 +33,8 @@ ok( my $server = Net::LDAP::Server::Test->new( $ldap_port, auto_schema => 1 ),
 
 my $ldap = Net::LDAP->new("localhost:$ldap_port");
 $ldap->bind();
+$ldap->add("ou=foo,dc=bestpractical,dc=com");
+
 my @ldap_entries;
 for ( 0 .. 12 ) {
     my $username = "testuser$_";

t/user-import-privileged.t

@@ -18,6 +18,8 @@ ok( my $server = Net::LDAP::Server::Test->new( $ldap_port, auto_schema => 1 ),
 
 my $ldap = Net::LDAP->new("localhost:$ldap_port");
 $ldap->bind();
+$ldap->add("ou=foo,dc=bestpractical,dc=com");
+
 my @ldap_entries;
 for ( 1 .. 13 ) {
     my $username = "testuser$_";

t/user-import.t

@@ -18,6 +18,8 @@ ok( my $server = Net::LDAP::Server::Test->new( $ldap_port, auto_schema => 1 ),
 
 my $ldap = Net::LDAP->new("localhost:$ldap_port");
 $ldap->bind();
+$ldap->add("ou=foo,dc=bestpractical,dc=com");
+
 my @ldap_entries;
 for ( 1 .. 13 ) {
     my $username = "testuser$_";