do a little more on testing
coa script optimization

1. content of what we log
2. remove unnecessary subroutines of dispatcher coa.pl
fix debugging information printing of QoS testing

change the variables of bandwidth related info.
Add other redis HASH command for testing
more adjustments for production env

1. add attributes into list of CachedAVP in alu.cfg
2. add [CacheServer1] into redid.cfg
3.
config parameters adjustments
make it more reliable by adding some features

1. creating more redid client connection by different uses.
2. try it again on calling “del” command by creating another connection
3. use “Transaction” while calling setSubscHash()
4. a bit fix on return type of CoA response