Repair tests for strict DER signatures.

While we're at it, repair a similar test for CLTV, and make the repaired RPC tests run by default.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

qa/pull-tester/rpc-tests.sh

@@ -40,10 +40,10 @@ testScripts=(
     'zcjoinsplit.py'
     'zcjoinsplitdoublespend.py'
     'getblocktemplate.py'
+    'bip65-cltv-p2p.py'
+    'bipdersig-p2p.py'
 );
 testScriptsExt=(
-    'bipdersig-p2p.py'
-    'bipdersig.py'
     'getblocktemplate_longpoll.py'
     'getblocktemplate_proposals.py'
     'pruning.py'