Fix "Execute Command and Write FFDC" to handle quotes in stderr.

In "Execute Command and Write FFDC":
  - Fix stderr check to handle stderr text containing single quotes.
  - Change to include stdout when writing error data to logpath.
  - Made a few changes to comply with team standards.

Change-Id: I66b4d05cbc5a424b96bfefb94fe35b90ac050c3b
Signed-off-by: Jeff Whitlock <v2aic232@us.ibm.com>
1 file changed