cli: make parse in posix mode
cli: make parse in posix mode

Posix mode allows the parse to:
- split by whitespace but value="between quotes are retained or enclose"
- quotes are stripped out

Signed-off-by: Rohit Yadav <0fa72ca37c4b5fa62675187ce32ea6c9f842fd52@apache.org>

remibergsma/cloudstack-cloudmonkey,Interoute/cloudmonkey-interoute,apache/cloudstack-cloudmonkey,remibergsma/cloudstack-cloudmonkey,Interoute/cloudmonkey-interoute,apache/cloudstack-cloudmonkey