RFR(T) : 8209455 : [error-prone] JdkObsolete in jdk.management.agent

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8209455/webrev.00
> 2 lines changed: 0 ins; 0 del; 2 mod; 


Hi all,

could you please review this trivial cleanup which replaces StringBuffer by 
StringBuilder in jdk.management.agent module?

webrev: http://cr.openjdk.java.net/~iignatyev/8209455/webrev.00/
JBS: https://bugs.openjdk.java.net/browse/JDK-8209455

Thanks,
-- Igor