Suppress snmp lib memory leak, skip ASAN tests

I don't know enough about this library to fix those :(

Cherry-picked from:
be4db6b
ba1d9d0

Author: iluuu1994

.github/lsan-suppressions.txt

@@ -1 +1,2 @@
 leak:acommon::DictInfoList::elements
+leak:netsnmp_init_mib_internals

ext/snmp/tests/snmp-object-errno-errstr.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmp-object-error.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmp2_get.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmp2_set-nomib.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --ENV--
 MIBS=

ext/snmp/tests/snmp2_walk.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmp3-error.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmp_getvalue.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmpget.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php

ext/snmp/tests/snmpset-nomib.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --ENV--
 MIBS=

ext/snmp/tests/snmpwalk.phpt

@@ -7,6 +7,7 @@ snmp
 --SKIPIF--
 <?php
 require_once(__DIR__.'/skipif.inc');
+if (getenv('SKIP_ASAN')) die('skip Timeouts under ASAN');
 ?>
 --FILE--
 <?php