In perfmon: add a workaround for CA-97947, and fix error-logging
In perfmon: add a workaround for CA-97947, and fix error-logging

In CA-97947 the xapi rpc call that creates the alert message has
become case-sensitive.
The workaround is to use the capitalisation it recognises.
Also the error-logging in perfmon could not handle Exceptions of
type XenAPI.Failure; now it can and is more robust.

Signed-off-by: Thomas Sanders <c547603d2dd860735c4f0c043b1348f5c48c02f8@citrix.com>

koushikcgit/xcp-networkd,johnelse/xcp-rrdd,koushikcgit/xcp-rrdd,koushikcgit/xcp-networkd,simonjbeaumont/xcp-rrdd,djs55/xcp-rrdd,koushikcgit/xcp-rrdd,djs55/xcp-networkd,djs55/squeezed,johnelse/xcp-rrdd,robhoes/squeezed,sharady/xcp-networkd,djs55/xcp-networkd,djs55/xcp-rrdd,simonjbeaumont/xcp-rrdd,sharady/xcp-networkd,koushikcgit/xcp-rrdd