[Artemis Testsuite] Several tests fail if the project is located on path with special characters

java.nio.file.NoSuchFileException: /mnt/hudson_workspace/workspace/artemis-project-testsuite-matrix-upstream/NATIVES/false/jdk/openjdk1.8_local/label/RHEL6%26%26x86_64/artemis-cli/target/test-classes/broker-reload.xml
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
	at java.nio.file.Files.newByteChannel(Files.java:361)
	at java.nio.file.Files.newByteChannel(Files.java:407)
	at java.nio.file.Files.readAllBytes(Files.java:3152)
	at org.apache.activemq.cli.test.FileBrokerTest.replacePatternInFile(FileBrokerTest.java:145)
	at org.apache.activemq.cli.test.FileBrokerTest.testConfigFileReload(FileBrokerTest.java:137)