software/theia: generate a ~/bin/slapos wrapper

Webrunner was using this and it's natural for users coming from
slaprunner to find slapos wrapper in ~/bin/slapos, but where theia is
very incompatible is that ~/bin/sla[TAB] will another slapos-standalone
which will conflict with the one from theia.

software/theia/buildout.hash.cfg

@@ -15,7 +15,7 @@
 
 [instance-theia]
 _update_hash_filename_ = instance-theia.cfg.jinja.in
-md5sum = bf611d4551e6c2d4ea5fd22c3ae8ecfd
+md5sum = 43b3435b3bc08db42335c03b5b8fe465
 
 [instance]
 _update_hash_filename_ = instance.cfg.in

software/theia/instance-theia.cfg.jinja.in

@@ -14,6 +14,7 @@ theia-environment-parts =
 
 theia-parts =
   frontend-instance
+  slapos-standalone-bin-wrapper
   promises
 
 parts =
@@ -629,6 +630,11 @@ hash-files =
 hostname = $${slapos-standalone-config:ipv4}
 port = $${slapos-standalone-config:port}
 
+[slapos-standalone-bin-wrapper]
+recipe = slapos.cookbook:wrapper
+wrapper-path = $${directory:bin}/slapos
+command-line = $${slapos-standalone-config:base-directory}/bin/slapos
+
 
 # Slapos Standalone Autoprocessing
 # --------------------------------

software/theia/test/test.py

@@ -67,7 +67,7 @@ class TheiaTestCase(SlapOSInstanceTestCase):
     try:
       return cls._theia_slapos
     except AttributeError:
-      cls._theia_slapos = slapos = cls.getPath('srv', 'runner', 'bin', 'slapos')
+      cls._theia_slapos = slapos = cls.getPath('bin', 'slapos')
       return slapos
 
   @classmethod