Merge bitcoin/bitcoin#28176: tests: add coverage to feature_addrman.py

380130d9d7 test: add coverage to feature_addrman.py (kevkevin)

Pull request description:

  I added two new tests that will cover the nNew and nTried tests which add coverage to the if block by checking values larger than our range since we only check for negative values now

  adding coverage to these lines
  https://github.com/bitcoin/bitcoin/blob/master/src/addrman.cpp#L273
  https://github.com/bitcoin/bitcoin/blob/master/src/addrman.cpp#L280

  our test seem to only cover the `nTried < 0` and `nNew < 0` scenarios

ACKs for top commit:
  ismaelsadeeq:
    ACK 380130d9d7, code looks good to me 🍃 .
  0xB10C:
    Re-ACK 380130d9d7

Tree-SHA512: a063bd9ca4d2d536a27c8c22a28fb13759a96f19cd8ba6cb8879cf7f65046d4ff6e8f70df17feaffd0d0d08ef914cb18a11258d313a4841c811a7e7ae4df6d5b

test/functional/test_framework/netutil.py

@@ -25,6 +25,11 @@ import os
 STATE_LISTEN = '0A'
 # STATE_CLOSING = '0B'
 
+# Address manager size constants as defined in addrman_impl.h
+ADDRMAN_NEW_BUCKET_COUNT = 1 << 10
+ADDRMAN_TRIED_BUCKET_COUNT = 1 << 8
+ADDRMAN_BUCKET_SIZE = 1 << 6
+
 def get_socket_inodes(pid):
     '''
     Get list of socket inodes for process pid.