Merge #13951: Hardcoded seeds update pre-0.17 branch

176aa5aa1d contrib: fix GetDesirableServiceFlags typo in seeds/README.md (MarcoFalke)
825fb02ef1 net: Update hardcoded seeds (Wladimir J. van der Laan)
61c0d3b9aa contrib: in makeseeds, add 0.16.x to PATTERN_AGENT, remove 0.13.x (Wladimir J. van der Laan)

Pull request description:

  As per release process and https://github.com/bitcoin/bitcoin/blob/master/contrib/seeds/README.md

Tree-SHA512: c1acd43d8462196f2606babd5268ea75dbb844da729ac9592f08b4895c6a4754591ccbc6ac0bc364b2fb082695e72656154c141dd83c847db8973b3af8df74be

contrib/seeds/README.md

@@ -4,7 +4,7 @@ Utility to generate the seeds.txt list that is compiled into the client
 (see [src/chainparamsseeds.h](/src/chainparamsseeds.h) and other utilities in [contrib/seeds](/contrib/seeds)).
 
 Be sure to update `PATTERN_AGENT` in `makeseeds.py` to include the current version,
-and remove old versions as necessary (at a minimum when GetDesireableServiceFlags
+and remove old versions as necessary (at a minimum when GetDesirableServiceFlags
 changes its default return value, as those are the services which seeds are added
 to addrman with).
 

contrib/seeds/makeseeds.py

@@ -30,7 +30,7 @@ SUSPICIOUS_HOSTS = {
 PATTERN_IPV4 = re.compile(r"^((\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})):(\d+)$")
 PATTERN_IPV6 = re.compile(r"^\[([0-9a-z:]+)\]:(\d+)$")
 PATTERN_ONION = re.compile(r"^([abcdefghijklmnopqrstuvwxyz234567]{16}\.onion):(\d+)$")
-PATTERN_AGENT = re.compile(r"^(/Satoshi:0.13.(1|2|99)/|/Satoshi:0.14.(0|1|2|99)/|/Satoshi:0.15.(0|1|2|99)/)$")
+PATTERN_AGENT = re.compile(r"^(/Satoshi:0.14.(0|1|2|99)/|/Satoshi:0.15.(0|1|2|99)|/Satoshi:0.16.(0|1|2|99)/)$")
 
 def parseline(line):
     sline = line.split()