[fix][broker] Fix incorrect Nic usage collected by pulsar

[thetumbled]

Fixes #18881 #18881

Motivation

When retrieve all paths of physical NICs, it did not filter those NICs whose state are down.
org.apache.pulsar.broker.loadbalance.LinuxInfoUtils#getPhysicalNICs

As a consequence, we will get a wrong limit value of NIC if loadBalancerOverrideBrokerNicSpeedGbps is enabled.

for example, we have 4 physical nics, but only eth0 and eth1 is enable, and both of their speed is 10Gbps.

2: eth0:  state UP 
3: eth1: state UP 
4: eth2: state DOWN 
5: eth3:state DOWN 

So, the correct limit value of NIC is 20Gbps, that is 20000000 Kbps. But the limit value collected by pulsar is 40Gbps, that is 40000000 Kbps. this is caused by the bug described above.

Modifications

filter those NICs who are unusable.

Verifying this change

• Make sure that the change passes the CI checks.

This change is already covered by existing tests, such as (please describe tests).

Documentation

• doc
• doc-required
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• doc-complete

Matching PR in forked repository

PR in forked repository: thetumbled#7

[mattisonchao]

Sorry, I missed this PR. could you follow this change? #18883 Because from the kernel document, not only up state can work.

[thetumbled]

Sorry, I missed this PR. could you follow this change? #18883 Because from the kernel document, not only up state can work.

ok.

[codecov-commenter]

Codecov Report

Merging #18882 (1dd8469) into master (3180a4a) will increase coverage by 0.59%.
The diff coverage is 56.52%.

@@             Coverage Diff              @@
##             master   #18882      +/-   ##
============================================
+ Coverage     46.17%   46.76%   +0.59%     
- Complexity    10359    10500     +141     
============================================
  Files           703      703              
  Lines         68845    68870      +25     
  Branches       7382     7384       +2     
============================================
+ Hits          31788    32208     +420     
+ Misses        33448    33051     -397     
- Partials       3609     3611       +2     

Flag	Coverage Δ
unittests	46.76% <56.52%> (+0.59%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...va/org/apache/pulsar/client/impl/ConsumerImpl.java	15.09% <0.00%> (-0.04%)	⬇️
...he/pulsar/client/impl/MultiTopicsConsumerImpl.java	22.78% <0.00%> (-0.09%)	⬇️
...ache/pulsar/broker/loadbalance/LinuxInfoUtils.java	34.65% <75.00%> (+7.90%)	⬆️
...ker/loadbalance/impl/LinuxBrokerHostUsageImpl.java	79.68% <100.00%> (ø)
...g/apache/bookkeeper/mledger/util/StatsBuckets.java	43.75% <0.00%> (-16.67%)	⬇️
...ookkeeper/mledger/impl/ManagedLedgerMBeanImpl.java	53.17% <0.00%> (-9.53%)	⬇️
...sar/broker/service/schema/SchemaRegistryStats.java	71.25% <0.00%> (-3.75%)	⬇️
...oker/service/schema/SchemaRegistryServiceImpl.java	61.84% <0.00%> (-3.47%)	⬇️
...ker/resourcegroup/ResourceGroupConfigListener.java	64.38% <0.00%> (-2.74%)	⬇️
...ava/org/apache/pulsar/broker/service/Consumer.java	66.19% <0.00%> (-1.96%)	⬇️
... and 48 more

[MarvinCai]

lgtm