add cpu fine grained stall tracking in pressure.stat

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8BCV4



-------------------------------

Introduce cpu fine grained stall tracking(cpu cfs bandwidth or cpu qos) in
pressure.stat. For cpu fine grained stall tracking, only "full"
information in pressure.stat.

for example:

/test # cat /tmp/cpuacct/test/pressure.stat
cgroup_memory_reclaim
some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0
global_memory_reclaim
some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0
compact
some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0
cgroup_async_memory_reclaim
some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0
swap
some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0
cpu_cfs_bandwidth
full avg10=21.76 avg60=4.58 avg300=0.98 total=3893827
cpu_qos
full avg10=0.00 avg60=0.00 avg300=0.00 total=0

Signed-off-by: Lu Jialin <lujialin4@huawei.com>