The issue happens because StandaloneCartridgeResource.toString()/ApplicationResource.toString() methods from openshift-java-client-2.7.0.Final.jar are called recursively.

Stacktrace:
!MESSAGE An internal error occurred during: "Verifying SSH session...".
!STACK 0
java.lang.StackOverflowError
at java.lang.StringBuilder.append(StringBuilder.java:136)
at sun.util.locale.provider.LocaleResources.getTimeZoneNames(LocaleResources.java:255)
at sun.util.locale.provider.TimeZoneNameProviderImpl.getDisplayNameArray(TimeZoneNameProviderImpl.java:122)
at sun.util.locale.provider.TimeZoneNameProviderImpl.getDisplayName(TimeZoneNameProviderImpl.java:98)
at sun.util.locale.provider.TimeZoneNameUtility$TimeZoneNameGetter.getName(TimeZoneNameUtility.java:328)
at sun.util.locale.provider.TimeZoneNameUtility$TimeZoneNameGetter.getObject(TimeZoneNameUtility.java:281)
at sun.util.locale.provider.TimeZoneNameUtility$TimeZoneNameGetter.getObject(TimeZoneNameUtility.java:267)
at sun.util.locale.provider.LocaleServiceProviderPool.getLocalizedObjectImpl(LocaleServiceProviderPool.java:281)
at sun.util.locale.provider.LocaleServiceProviderPool.getLocalizedObject(LocaleServiceProviderPool.java:265)
at sun.util.locale.provider.TimeZoneNameUtility.retrieveDisplayName(TimeZoneNameUtility.java:135)
at java.util.TimeZone.getDisplayName(TimeZone.java:400)
at java.util.Date.toString(Date.java:1045)
at java.lang.String.valueOf(String.java:2982)
at java.lang.StringBuilder.append(StringBuilder.java:131)
at com.openshift.internal.client.ApplicationResource.toString(ApplicationResource.java:1015)
at java.lang.String.valueOf(String.java:2982)
at java.lang.StringBuilder.append(StringBuilder.java:131)
at com.openshift.internal.client.StandaloneCartridgeResource.toString(StandaloneCartridgeResource.java:174)
at java.lang.String.valueOf(String.java:2982)
at java.lang.StringBuilder.append(StringBuilder.java:131)
at com.openshift.internal.client.ApplicationResource.toString(ApplicationResource.java:1015)
at java.lang.String.valueOf(String.java:2982)
at java.lang.StringBuilder.append(StringBuilder.java:131)
at com.openshift.internal.client.StandaloneCartridgeResource.toString(StandaloneCartridgeResource.java:174)