Change instance_root.

Put everything in /opt. It is easier than the default to manage.

slapos.cfg

@@ -4,7 +4,7 @@
 computer_id = local_computer
 master_url = http://127.0.0.1:8080
 software_root = /opt/slapgrid
-instance_root = /srv/slapgrid
+instance_root = /opt/srv/slapgrid
 # A list of directories containing shared parts for slapos.recipe.cmmi.
 # Only the last one is used to install new parts, other ones can have
 # already installed parts.
@@ -181,5 +181,5 @@ upload-to-binary-cache-url-blacklist =
 [collect]
 enable = True 
 time_cycle = 86400
-pid_folder = /srv/slapgrid/var/run
+pid_folder = /opt/srv/slapgrid/var/run
 use_quota = False