Scripts execution on changes in src code of pluign folder

If devconsole pluign src code is modified, then only that particular integration tests should get executed, this helps to reduce the execution time on CI and also gives more clarity on product quality

 Got similar code from other team, so need to work on this, It would be an enhancement for us

https://github.com/eclipse-che/che-operator/pull/219/files#diff-68e52f7fe228306a73837864c6413df2a2a388ab3647c7068e4ecd1b76a5288a