vmware customization: return network config format

For customizing the machines hosted on 'VMWare' hypervisor, the datasource
should return the 'network config' data in 'curtin' format.

This branch also fixes /etc/network/interfaces replacing the line
"source /etc/network/interfaces.d/*.cfg" which is incorrectly removed
when VMWare's Perl Customization Engine writes /etc/network/interfaces.

Modify the code to read the customization configuration and return the
converted data.

Added few tests.

LP: #1675063

1 files changed, 7 insertions, 5 deletions

diff --git a/cloudinit/sources/helpers/vmware/imc/guestcust_util.py b/cloudinit/sources/helpers/vmware/imc/guestcust_util.py
index 1ab6bd41..44075255 100644
--- a/cloudinit/sources/helpers/vmware/imc/guestcust_util.py
+++ b/cloudinit/sources/helpers/vmware/imc/guestcust_util.py
@@ -59,14 +59,16 @@ def set_customization_status(custstate, custerror, errormessage=None):
     return (out, err)
 
 
-# This will read the file nics.txt in the specified directory
-# and return the content
-def get_nics_to_enable(dirpath):
-    if not dirpath:
+def get_nics_to_enable(nicsfilepath):
+    """Reads the NICS from the specified file path and returns the content
+
+    @param nicsfilepath: Absolute file path to the NICS.txt file.
+    """
+
+    if not nicsfilepath:
         return None
 
     NICS_SIZE = 1024
-    nicsfilepath = os.path.join(dirpath, "nics.txt")
     if not os.path.exists(nicsfilepath):
         return None