Added new members as SystemUI owners

Bug: 118673253
Test: see owners file
Change-Id: Ie49a091bf16d184f86264badf2d99fe13066eecb

packages/SystemUI/OWNERS

@@ -6,20 +6,36 @@ adamcohen@google.com
 asc@google.com
 ashaikh@google.com
 beverlyt@google.com
+brockman@google.com
 cinek@google.com
 cwren@google.com
 dupin@google.com
+ethibodeau@google.com
 evanlaird@google.com
 jmonk@google.com
 jaggies@google.com
 jjaggi@google.com
+joshmcgrath@google.com
 juliacr@google.com
+juliatuttle@google.com
 kchyn@google.com
+kozynski@google.com
+kprevas@google.com
 madym@google.com
+mankoff@google.com
+nbenbernou@google.com
+nesciosquid@google.com
 ngmatthew@google.com
+ogunwale@google.com
+pixel@google.com
 roosa@google.com
 shahrk@google.com
+snoeberger@google.com
+steell@google.com
+stwu@google.com
 sunnygoyal@google.com
+susikp@google.com
+tsuji@google.com
 twickham@google.com
 winsonc@google.com