Fixed bug in build_packages that would report package not valid when building...

Fixed bug in build_packages that would report package not valid when building it for the first time.

build/recipes/build_pkgs/build_pkgs.py

 import subprocess
 
-def get_pkg_list():
+def get_dirs():
     """
-    Run a couple shell commands to parse the metadata directory for its packages.
-    :return: List of packages in metadata directory
+    Finds all subdirectories containing setup.py files.
+    :return: List of directories as strings.
     """
-    find_proc = subprocess.run(["find", "build/metadata",
-                                  "-name", "meta.yaml"],
-                                 stdout=subprocess.PIPE)
-    paths = find_proc.stdout.decode('utf-8')
-    fmt_paths = paths.replace("build/metadata/", "").replace("/meta.yaml", "")
-    return fmt_paths.split('\n')
+    find = subprocess.run([
+        'find', '.', '-name', 'setup.py', '-not', '-path', './build/recipes/*'
+    ], stdout=subprocess.PIPE)
+    dirs = find.stdout.decode('utf-8').split('\n')
+    dirs_cpy = dirs
+
+    for i, d in enumerate(dirs_cpy):
+        dirs[i] = d.replace('/setup.py', '')
+
+    return dirs
+
+def get_names(dirs):
+    """
+    Generate list of subproject names based on the rule that the name of the
+    subproject directory will be the name of the subproject.
+    :return: List of names as strings.
+    """
+    names = []
+    for d in dirs:
+        if d != '':
+            name = d.split('/')[-1]
+
+            if name == "archive":
+                # Case with ./services/archive having special dir structure
+                name = "services"
+            names.append(name)
+
+    return names
 
 class Recipe:
     def __init__(self, buildout, name, options):
@@ -23,7 +45,7 @@ class Recipe:
         """
         self.name = name
         self.options = options
-        self.pkg_list = get_pkg_list()
+        self.pkg_list = get_names(get_dirs())
 
     def install(self):
         """