add mtillman.pub and /openssh/server/team/members/michaeltillman.yml

Change-Id: Iada17fa27ba1591fa0aac914575b9e01c02b0d76
diff --git a/openssh/server/team/presales.yml b/openssh/server/team/presales.yml
index bb26682..770e549 100644
--- a/openssh/server/team/presales.yml
+++ b/openssh/server/team/presales.yml
@@ -7,6 +7,7 @@
 - system.openssh.server.team.members.andreidanin
 - system.openssh.server.team.members.danielvirassamy
 - system.openssh.server.team.members.srichowdhury
+- system.openssh.server.team.members.michaeltillman
 
 parameters:
   _param: