Fix TestGDocsSecurity.securedGDocsCustomFieldInJira()

junit.framework.AssertionFailedError: Button [next_submit] not found.
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.Assert.assertTrue(Assert.java:20)
at net.sourceforge.jwebunit.junit.WebTester.assertButtonPresent(WebTester.java:1816)
at com.atlassian.studio.livetest.PrintingPageWebTester.assertButtonPresent(PrintingPageWebTester.java:1223)
at net.sourceforge.jwebunit.junit.WebTester.clickButton(WebTester.java:2521)
at com.atlassian.studio.livetest.FuncTestWebTester.clickButton(FuncTestWebTester.java:55)
at com.atlassian.studio.gappstest.gdocs.GDocsJiraIssueCreator.create(GDocsJiraIssueCreator.java:72)
at com.atlassian.studio.gappstest.gdocs.GDocsJiraIssueCreator.create(GDocsJiraIssueCreator.java:51)
at com.atlassian.studio.gappstest.gdocs.GDocsJiraIssueCreator.create(GDocsJiraIssueCreator.java:41)
at com.atlassian.studio.gappstest.TestGDocsSecurity.securedGDocsCustomFieldInJira(TestGDocsSecurity.java:107)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
... Removed 24 stack frames