RFR: JDK-8055137 - create support for UART in JT Harness

[Stas Smirnov]

issue: JDK-8055137 <https://bugs.openjdk.java.net/browse/JDK-8055137>
webrev: 8055137 <http://cr.openjdk.java.net/%7Estsmirno/8055137/>

Hi All,

Need a review for an update.
These changes add support of UART in JT Harness. Two new classes for 
interview and config, modification of BasicInterview class and i18n 
strings.
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Best regards,
Stas Smirnov

Stas Smirnov | Java Embedded
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