Merge #15629: init: Throw error when network specific config is ignored

fae38c3dc6 doc: Fix all typos reported by codespell (MarcoFalke)
fa9058f0ed doc: Add release notes for 15629 (MarcoFalke)
fa4a922d78 qa: Add test for missing testnet section in conf file (MarcoFalke)
dddd6f0f58 init: Throw error when network specific config is ignored (MarcoFalke)

Pull request description:

  This should have no effect on mainnet users, but simplifies testing, where config settings are currently ignored with only a warning. Fix this by making it an error.

  Issues:
  *  bitcoin client 0.17.0 ignores wallet's name (file) #14523
  *  Can't set custom rpcport on testnet #13777
  * ...

ACKs for commit fae38c:

Tree-SHA512: 2e209526898eea6e444c803ec2666989cee4ca137492d32984998733c50a70056cb54657df8dc3027a6a0612738a8afce0bc35824b868c5f22281e00e0188530

test/functional/feature_config_args.py

@@ -25,6 +25,10 @@ class ConfArgsTest(BitcoinTestFramework):
             conf.write('-dash=1\n')
         self.nodes[0].assert_start_raises_init_error(expected_msg='Error reading configuration file: parse error on line 1: -dash=1, options in configuration file must be specified without leading -')
 
+        with open(inc_conf_file_path, 'w', encoding='utf8') as conf:
+            conf.write("wallet=foo\n")
+        self.nodes[0].assert_start_raises_init_error(expected_msg='Error: Config setting for -wallet only applied on regtest network when in [regtest] section.')
+
         with open(inc_conf_file_path, 'w', encoding='utf-8') as conf:
             conf.write('nono\n')
         self.nodes[0].assert_start_raises_init_error(expected_msg='Error reading configuration file: parse error on line 1: nono, if you intended to specify a negated option, use nono=1 instead')

test/functional/test_framework/test_node.py

@@ -369,7 +369,7 @@ class TestNode():
                 stderr=subprocess.DEVNULL, stdout=subprocess.DEVNULL) == 0
 
         if not sys.platform.startswith('linux'):
-            self.log.warning("Can't profile with perf; only availabe on Linux platforms")
+            self.log.warning("Can't profile with perf; only available on Linux platforms")
             return None
 
         if not test_success('which perf'):

test/functional/wallet_importmulti.py

@@ -760,7 +760,7 @@ class ImportMultiTest(BitcoinTestFramework):
         assert_equal(addr2, newaddr2)
 
         # Import a multisig and make sure the keys don't go into the keypool
-        self.log.info('Imported scripts with pubkeys shoud not have their pubkeys go into the keypool')
+        self.log.info('Imported scripts with pubkeys should not have their pubkeys go into the keypool')
         addr1 = self.nodes[0].getnewaddress()
         addr2 = self.nodes[0].getnewaddress()
         pub1 = self.nodes[0].getaddressinfo(addr1)['pubkey']