qa: Use bitcoind as parent in Travis tests

.travis.yml

@@ -30,7 +30,7 @@ env:
 # Win64
     - HOST=x86_64-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-x86-64 wine1.6 bc" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
 # bitcoind
-    - HOST=x86_64-unknown-linux-gnu PACKAGES="bc python3-zmq" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER"
+    - HOST=x86_64-unknown-linux-gnu PACKAGES="bc python3-zmq" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1" RUN_TESTS=true RUN_FEDPEG_BITCOIND=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER"
 # No wallet
     - HOST=x86_64-unknown-linux-gnu PACKAGES="python3" DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
 # Cross-Mac
@@ -70,6 +70,9 @@ script:
     - export LD_LIBRARY_PATH=$TRAVIS_BUILD_DIR/depends/$HOST/lib
     - if [ "$RUN_TESTS" = "true" ]; then make $MAKEJOBS check VERBOSE=1; fi
     - if [ "$RUN_TESTS" = "true" ]; then qa/pull-tester/rpc-tests.py --coverage; fi
+    - if [ "$RUN_FEDPEG_BITCOIND" = "true" ]; then BITCOIND_VERSION=0.16.3 && BITCOIND_ARCH=x86_64-linux-gnu; fi
+    - if [ "$RUN_FEDPEG_BITCOIND" = "true" ]; then wget https://bitcoincore.org/bin/bitcoin-core-0.16.3/bitcoin-$BITCOIND_VERSION-$BITCOIND_ARCH.tar.gz && tar -zxf bitcoin-$BITCOIND_VERSION-$BITCOIND_ARCH.tar.gz && rm bitcoin-$BITCOIND_VERSION-$BITCOIND_ARCH.tar.gz; fi
+    - if [ "$RUN_FEDPEG_BITCOIND" = "true" ]; then qa/rpc-tests/feature_fedpeg.py --parent_bitcoin --parent_binpath $(pwd)/bitcoin-$BITCOIND_VERSION/bin/bitcoind; fi
 after_script:
     - echo $TRAVIS_COMMIT_RANGE
     - echo $TRAVIS_COMMIT_LOG