selftest: Make --include-env and --exclude-env use the base env name

The code as deployed would have required (eg) '--include-env=ktest
--include-env=ktest:local' which was not done in autobuild, causing
tests to be skipped.  This patch restores the intended behaviour.

This causes 33 testsuites to run, one more test (the newly added
samba.tests.ntlmauth) than the old regex provided (before
6027721).

(The regression dropped us down to matching only 7 tests).

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12922

Signed-off-by: Andrew Bartlett <[email protected]>
Reviewed-by: Stefan Metzmacher <[email protected]>

Autobuild-User(master): Stefan Metzmacher <[email protected]>
Autobuild-Date(master): Mon Jul 24 03:33:01 CEST 2017 on sn-devel-144

selftest/selftest.pl

@@ -1085,19 +1085,19 @@ ($)
 		my $cmd = $$_[2];
 		my $name = $$_[0];
 		my $envname = $$_[1];
-
+		my ($env_basename, $env_localpart) = split(/:/, $envname);
 		my $envvars = "SKIP";
 
 		if (@opt_include_env) {
 		    foreach my $env (@opt_include_env) {
-			if ($envname eq $env) {
+			if ($env_basename eq $env) {
 			    $envvars = setup_env($envname, $prefix);
 			}
 		    }
 		} elsif (@opt_exclude_env) {
 		    my $excluded = 0;
 		    foreach my $env (@opt_exclude_env) {
-			if ($envname eq $env) {
+			if ($env_basename eq $env) {
 			    $excluded = 1;
 			}
 		    }