Replace OPENBMC with BMC in the code

Changes:
   - OPENBMC is a generic term used, whereas
     the correct term to use is BMC. Updating
     in all code and documentation.

Tested:
   - Ran with the changes from the sandbox
Change-Id: Ide2d26f94a7f824005776e53105f199ac56fd980
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/ffdc/collect_ffdc.py b/ffdc/collect_ffdc.py
index 523373a..caf2b4d 100644
--- a/ffdc/collect_ffdc.py
+++ b/ffdc/collect_ffdc.py
@@ -53,7 +53,7 @@
     "-t",
     "--type",
     help=(
-        "OS type of the remote (targeting) host. OPENBMC, RHEL, UBUNTU,"
+        "OS type of the remote (targeting) host. BMC, RHEL, UBUNTU,"
         " SLES, AIX"
     ),
 )