Add Reset search button to search Dialog

[asfimport]

@rollno748 (Bug 66054): Hello,

Need a Reset button in Search dialog to Reset the search. This will help us to Reset Search while debugging or enhancing the script within the dialog itself.

Thanks,

OS: All

[asfimport]

@rollno748 (migrated from Bugzilla): Added the change -> Will create a pull request to the master as aearly as possible

Thanks

[asfimport]

@rollno748 (migrated from Bugzilla): Added the sceenshot for unit test - works fine.

Just waiting for the existing pull to be accepted by maintener to create a new pull request

Created attachment Unit%20test.png: Unittest report

[asfimport]

@rollno748 (migrated from Bugzilla): https://github.com/apache/jmeter/pull/710

still waiting for maintener to approve the change