stack/slapos: Introduce `slapos-command` section

This section installs a slapos command with network cache enabled, for
softwares using an embedded slapos.

software/erp5testnode/software.cfg

@@ -14,6 +14,7 @@ extends =
   ../../stack/monitor/buildout.cfg
 
 parts =
+  slapos-command
   slapos-cookbook
   template
   eggs

software/slaprunner/software.cfg

@@ -37,6 +37,7 @@ shared-part-list =
 # to avoid versioning issues
 
 common-parts =
+  slapos-command
   slapos-cookbook
   template
   instance-runner-import

stack/slapos.cfg

@@ -98,6 +98,14 @@ eggs =
   pyOpenSSL
   slapos.cookbook
 
+# Install a slapos command with networkcache enabled in ${buildout:bin-directory}
+[slapos-command]
+recipe = zc.recipe.egg
+eggs =
+  ${lxml-python:egg}
+  slapos.core
+  slapos.libnetworkcache
+
 [versions]
 setuptools = 44.0.0
 # Use SlapOS patched zc.buildout