fix: [NPM] V2 NPM (with only linux data plane) bug fix after first run

[huntergregory]

Reason for Change:
After running conformance test, fix finding issues.

1. Had a bug where we were jumping to AZURE-NPM-EGRESS chain instead. We need to jump to this other chain since the ingress allow mark will prevent us from returning to ingress chain again after a no-op pass through egress chain.

2. Observed multiple restarting NPM. Checked log and there is nil pointer errors in NPMSimpleError.

• For the second error, we need to UT to catch this nil error.
• Need to resolve lint warning.

3. Fix case-sensitivity on protocol value

• need to remove dependency later
• need better management with unspecified and Any

4. Fix problem of trying to destroy sets in use by a kernel component

• previously when running ipset restore, we would try to destroy sets before deleting any references to them in lists
• fix by destroying sets last in the ipset restore file

5. Fix duplicated namedPort prefix.

6. Fix translating egress (previously included only the default drop rule)

• Add UTs for egress

7. Fix string parsing issue in except information of ipblock

• Need more UTs (in dataplane_test.go)
• Better data structures to indicate nomatch information in ipblock
• Need to resolve lint warning.

8. Fix using correct, unique and consistent key in policy cache. (now deleting network policy works)

• Need more UTs
• Do not walk through windows part. Please revise windows if needed.

9. Fix Linux policy manager to use PodSelectorList instead of PodSelectorIPSets (this caused an impossible ipset match condition for nested pod labels e.g. pod-a-b AND pod:a AND pod:b).

• Will update the NPMNetworkPolicy struct to just have one of these fields eventually instead of the two.

• uses conventional commit messages

• includes documentation

• adds unit tests

Notes:

[vakalapa]

LGTM, great effort finding all the issues!!!!