Add installtype support to package-installs

Some packages should only be installed if a certain installtype is
specified.

Change-Id: Ia1a5af9ab4653e2646870ebd2d2db7e00a59305b

elements/package-installs/README.rst

@@ -10,6 +10,8 @@ example package-installs.yaml::
    phase: pre-install.d
  networkmanager:
    uninstall: True
+ os-collect-config:
+   installtype: source
 
 example package-installs.json::
 
@@ -17,14 +19,20 @@ example package-installs.json::
     "libxml2": null,
     "grub2": {"phase": "pre-install.d"},
     "networkmanager": {"uninstall": true}
+    "os-collect-config": {"installtype": "source"}
     }
 
 
-Setting phase or uninstall properties for a package overrides the following
+Setting phase, uninstall, or installtype properties for a package overrides
-default values::
+the following default values::
 
     phase: install.d
     uninstall: False
+    installtype: * (Install package for all installtypes)
+
+Setting the installtype property causes the package only to be installed if
+the specified installtype would be used for the element. See the
+diskimage-builder docs for more information on installtypes.
 
 
 DEPRECATED: Adding a file under your elements pre-install.d, install.d, or

elements/package-installs/bin/package-installs-squash

@@ -23,6 +23,12 @@ import os
 import yaml
 
 
+def get_element_installtype(element_name):
+    default = os.environ.get("DIB_DEFAULT_INSTALLTYPE", "source")
+    element_name.replace('-', '_')
+    return os.environ.get("DIB_INSTALLTYPE_%s" % element_name, default)
+
+
 def collect_data(data, filename, element_name):
     try:
         objs = json.load(open(filename))
@@ -36,6 +42,10 @@ def collect_data(data, filename, element_name):
         if 'uninstall' in params:
             install = "uninstall"
 
+        # Filter out incorrect installtypes
+        installtype = params.get('installtype', None)
+        elem_installtype = get_element_installtype(element_name)
+        if installtype is None or installtype == elem_installtype:
             data[phase][install].append((pkg_name, element_name))
     return data