NPE: scm inputs for import action when there are items which do not have tracked jobs

[gschueler]

from #62 (comment)

Hi guys. This is actually even more of an issue when trying to deploy a new instance of Rundeck from an already populated git repo.

We are able to setup all the config needed but because of this issue we can not retrieve the items that need to be synced.

Import remote Changes: Import the modifications to Rundeck
Fields:

Items:
java.lang.NullPointerException
	at org.rundeck.client.api.model.ScmImportItem.toMap(ScmImportItem.java:38)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
	at org.rundeck.client.tool.commands.projects.SCM.inputs(SCM.java:254)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.simplifyops.toolbelt.ToolBelt$MethodInvoker.run(ToolBelt.java:778)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.runCommand(ToolBelt.java:492)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.run(ToolBelt.java:359)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.runCommand(ToolBelt.java:492)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.run(ToolBelt.java:359)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.runCommand(ToolBelt.java:492)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.run(ToolBelt.java:359)
	at com.simplifyops.toolbelt.ToolBelt$CommandSet.runMain(ToolBelt.java:322)
	at org.rundeck.client.tool.Main.main(Main.java:56)