Autoload OS_CACERT environment variable

Author: tonytan4ever

inventory/rpcr_dynamic_inventory.py

@@ -43,6 +43,7 @@ class RPCRMaasInventory(MaasInventory):
     def __init__(self):
         # Load stackrc environment variable file
         self.load_stackrc_file()
+        self.load_os_cacert()
         super(RPCRMaasInventory, self).__init__()
 
     def read_input_inventory(self):
@@ -91,6 +92,17 @@ def load_stackrc_file(self):
                 v = match.group('value').strip('"').strip("'")
                 os.environ[k] = v
 
+    def load_os_cacert(self):
+        os_cert_path = '/etc/pki/ca-trust/source/anchors/'
+        if os.path.exists(os_cert_path):
+            # load the cert file in this directory
+            certs = []
+            for f in os.listdir(os_cert_path):
+                f_path = os.path.join(os_cert_path, f)
+                if os.path.isfile(f_path):
+                    certs.append(f_path)
+            os.environ['OS_CACERT'] = ' '.join(certs)
+
     def get_tripleo_plan_name(self):
         oss_command = 'stack list -f json'
         stack_list_result = self.run_oss_command(oss_command)

releasenotes/notes/auto-load-OS_CACERT-env-var-ae25fc79f62663ba.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    The rpcr-dynamic inventory now is able to set OS_CACERT environment
+    variable automatically.
+upgrade:
+  - |
+    Deployment process can skip the step setting OS_CACERT.