[Intellij][Spark on ADL] Update dialog pops several times when try to submit

[jingyanjingyan]

Build": 1738 PR

Repro Steps:
Provision a cluster, click Update from context menu, update data then try to submit

Result:
Update dialog pops twice

[jingyanjingyan]

The key step is refresh the cluster several times then submit update dialog.

[t-rufang]

Fixed in #2013

[v-jiche]

Verified. Fixed.
Build: azure-toolkit-for-intellij-2018.1.PR.2087.09-20-2018