Read instance resource quota info from "quota" namespace.

Scope all instance resource quota params such as CPU(cpu_shares,cpu_quota,
cpu_period), disk IO(disk_read_bytes_sec,disk_write_bytes_sec etc.),
network bandwidth(vif_inbound_average, vif_outbouand_average) to "quota"
scope in extra_specs, so that it doesn't conflict with compute_capabilities_filter.
after this patch, user should use:

nova flavor-key m1.tiny set quota:cpu_shares=1000 to set parameters.

Fix bug #1146322

DocImpact

Change-Id: I30e550d21f00eb949ee2f3f8fb4d952c10bf8000
Fix copyright - from LLC to Foundation

one last spot hopefully!

Change-Id: I4d557520a1a7a3e0b13bca7df6c8d06bd850b867
Merge "Fix copyright - from LLC to Foundation"
Merge "Read instance resource quota info from "quota" namespace."