RFR 8134420: sun/tools/jps/TestJpsClass fails with java.lang.RuntimeException: The line 'line 2' does not match pattern '^\\d+\\s+.*': expected true, was false

[Jaroslav Bachorik]

Please, review the following change

Issue : https://bugs.openjdk.java.net/browse/JDK-8134420
Webrev: http://cr.openjdk.java.net/~jbachorik/8134420/webrev.00
Currently, 'jps' will print multi-line vm args as they are - eg. 
splitting the output into multiple lines. This kind of output is not 
very easy to read and, incidentally, it can break this test.

My proposal is to replace all '\n' and '\r' characters with "\n" and 
"\r" strings respectively to keep the output format being 'one line per 
one JVM'.

Thanks,

-JB-