Multiple user config changes

Starting to make the system operable without using root.

Changes to groups, sudo, some file permissions.
Places all the user key config into users.pp

modules/rhizo_base/templates/bash_aliases.erb

@@ -1,3 +1,4 @@
 alias psql='psql postgresql://rhizomatica:<%= @pgsql_pwd %>@localhost/rhizomatica'
 alias systemctl='sudo systemctl'
 alias journalctl='sudo journalctl'
+alias sudo="/usr/bin/sudo -n"

modules/rhizo_base/templates/ssh_user_config.erb

@@ -1,10 +1,9 @@
 Include config.local
 
-Host lc1
-Hostname 172.16.0.11
-User root
-
-Host lc2
-Hostname 172.16.0.12
-User root
+Host 172.16.0.??
+  User root
+  IdentityFile ~/.ssh/bts_key
 
+Host 172.16.0.???
+  User ubnt
+  IdentityFile ~/.ssh/ubnt_key