Merge #8482: [qa] Use single cache dir for chains

fad8cf6 [qa] Use single cache dir for chains (MarcoFalke)
fa2d68f [qa] Adjust timeouts for micro-optimization of run time (MarcoFalke)
fae596f [qa] Sort scripts by time for pull_tester and don't overwrite setup_chain (MarcoFalke)

qa/pull-tester/rpc-tests.py

@@ -112,6 +112,8 @@ testScripts = [
     'receivedby.py',
     'mempool_resurrect_test.py',
     'txn_doublespend.py --mineblock',
+    'p2p-segwit.py',
+    'segwit.py',
     'txn_clone.py',
     'getchaintips.py',
     'rawtransactions.py',
@@ -133,13 +135,12 @@ testScripts = [
     'disablewallet.py',
     'sendheaders.py',
     'keypool.py',
+    'p2p-mempool.py',
     'prioritise_transaction.py',
     'invalidblockrequest.py',
     'invalidtxrequest.py',
     'abandonconflict.py',
     'p2p-versionbits-warning.py',
-    'p2p-segwit.py',
-    'segwit.py',
     'importprunedfunds.py',
     'signmessages.py',
     'p2p-compactblocks.py',
@@ -194,6 +195,7 @@ def runtests():
         coverage = RPCCoverage()
         print("Initializing coverage directory at %s\n" % coverage.dir)
     flags = ["--srcdir=%s/src" % BUILDDIR] + passon_args
+    flags.append("--cachedir=%s/qa/cache" % BUILDDIR)
     if coverage:
         flags.append(coverage.flag)