src/pmlogctl/pmlogctl.sh: refactor
src/pmlogctl/pmlogctl.sh: refactor

Major restructure to support pmlogger instance enumeration by:
    -c <class> => all hosts in the class, or
    hostname ... => just those hosts (all classes), or
    -c <class> hostname ... => intersecton of the named hosts and the class

Add -a flag to apply action to all instances (in some cases we're expecting
the instance enumeration to yield a single host to avoid surprises), -a
allows the action for multiple instances.

Add -f flag to force the action.  In some cases, there are checks to
prevent dangerous actions, e.g. destroy when there is no policy file
to match the class, so the "destroy:" policy is not known.  -f aims
large calibre weapon at foot.

Miscellaneous fixups, additional checks, tweaks to -v and -vv diags.

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp