Fix RPC tests that depend upon -anchorconfirmations=1

qa/rpc-tests/mergetoaddress_mixednotes.py

@@ -12,7 +12,8 @@ from mergetoaddress_helper import assert_mergetoaddress_exception
 
 class MergeToAddressMixedNotes(BitcoinTestFramework):
     def setup_nodes(self):
-        return start_nodes(4, self.options.tmpdir)
+        self.num_nodes = 4
+        return start_nodes(self.num_nodes, self.options.tmpdir, extra_args=[['-anchorconfirmations=1']] * self.num_nodes)
 
     def setup_chain(self):
         print("Initializing test directory " + self.options.tmpdir)

qa/rpc-tests/mergetoaddress_sapling.py

@@ -16,7 +16,7 @@ class MergeToAddressSapling (BitcoinTestFramework):
         self.helper.setup_chain(self)
 
     def setup_network(self, split=False):
-        self.helper.setup_network(self)
+        self.helper.setup_network(self, ['-anchorconfirmations=1'])
 
     def run_test(self):
         self.helper.run_test(self)

qa/rpc-tests/mergetoaddress_sprout.py

@@ -16,7 +16,7 @@ class MergeToAddressSprout (BitcoinTestFramework):
         self.helper.setup_chain(self)
 
     def setup_network(self, split=False):
-        self.helper.setup_network(self)
+        self.helper.setup_network(self, ['-anchorconfirmations=1'])
 
     def run_test(self):
         self.helper.run_test(self)

qa/rpc-tests/remove_sprout_shielding.py

@@ -20,7 +20,9 @@ from test_framework.util import (
 
 import logging
 
-HAS_CANOPY = ['-nurejectoldversions=false',
+HAS_CANOPY = [
+    '-nurejectoldversions=false', 
+    '-anchorconfirmations=1',
     nuparams(BLOSSOM_BRANCH_ID, 205),
     nuparams(HEARTWOOD_BRANCH_ID, 210),
     nuparams(CANOPY_BRANCH_ID, 220),