CA-225257: Fix XSRM typo in setup-pvs-proxy-rules
CA-225257: Fix XSRM typo in setup-pvs-proxy-rules

As otherwise xe pvs-proxy-destroy fails on running VMs as follows:
   [root@xrtuk-16-04 ~]# xe pvs-proxy-destroy uuid=8d484722-ca9c-487e-b826-f8defa58925b
   The server failed to handle your request, due to an internal error.  The given message may give details useful for debugging the problem.
   message: xenopsd internal error: Forkhelpers.Spawn_internal_error("/usr/libexec/xenopsd/setup-pvs-proxy-rules: line 197: XSRM: command not found\n", "", _)

Signed-off-by: Robert Breker <bfcd7039ca4b92386f0756a1d5e67ea4ff23cfe0@citrix.com>

thomassa/xenopsd,thomassa/xenopsd,thomassa/xenopsd