SAM Local invoke requires a credential profile

[rli]

Describe the bug
A local invoke without credentials set-up results in IDE error

Expected behavior
As a user, it is unclear why a local invoke requires credentials, especially since the hello_world sample does not make any AWS SDK calls

Screenshots

software.aws.toolkits.core.credentials.CredentialProviderNotFound: No active credential provider configured
	at software.aws.toolkits.jetbrains.core.credentials.DefaultProjectAccountSettingsManager.getActiveCredentialProvider(ProjectAccountSettingsManager.kt:114)
	at software.aws.toolkits.jetbrains.services.lambda.execution.sam.SamRunSettingsEditor.<init>(SamRunConfiguration.kt:239)
	at software.aws.toolkits.jetbrains.services.lambda.execution.sam.SamRunConfiguration.getConfigurationEditor(SamRunConfiguration.kt:59)
	at software.aws.toolkits.jetbrains.services.lambda.execution.sam.SamRunConfiguration.getConfigurationEditor(SamRunConfiguration.kt:54)
	at com.intellij.execution.impl.ConfigurationSettingsEditor.<init>(ConfigurationSettingsEditor.java:208)
	at com.intellij.execution.impl.ConfigurationSettingsEditorWrapper.<init>(ConfigurationSettingsEditorWrapper.java:49)
	at com.intellij.execution.impl.SingleConfigurationConfigurable.<init>(SingleConfigurationConfigurable.java:65)
	at com.intellij.execution.impl.SingleConfigurationConfigurable.editSettings(SingleConfigurationConfigurable.java:100)
	at com.intellij.execution.impl.RunDialog.editConfiguration(RunDialog.java:122)
	at com.intellij.execution.impl.RunDialog.editConfiguration(RunDialog.java:118)
	at com.intellij.execution.ProgramRunnerUtil.executeConfigurationAsync(ProgramRunnerUtil.java:67)
	at com.intellij.execution.ProgramRunnerUtil.executeConfiguration(ProgramRunnerUtil.java:43)
	at com.intellij.execution.impl.ExecutionManagerImpl.a(ExecutionManagerImpl.java:94)
	at com.intellij.execution.impl.ExecutionManagerImpl.access$300(ExecutionManagerImpl.java:43)
	at com.intellij.execution.impl.ExecutionManagerImpl$3.run(ExecutionManagerImpl.java:423)
	at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:232)
	at com.intellij.util.Alarm$Request.runSafely(Alarm.java:405)
	at com.intellij.util.Alarm$Request.access$700(Alarm.java:330)
	at com.intellij.util.Alarm$Request$1.run(Alarm.java:371)
	at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:315)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:447)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:431)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:415)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
	at java.awt.EventQueue.access$500(EventQueue.java:98)
	at java.awt.EventQueue$3.run(EventQueue.java:715)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
	at com.intellij.ide.IdeEventQueue.r(IdeEventQueue.java:781)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:722)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:382)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Additional context
Related to #476

[abrooksv]

If we pass nothing, SAM will take the default profile as well. We could make it required...or just let SAM take the default profile. I'd prefer to ask for a --no-credentials flag though so there are no surprises

[abrooksv]

SAM always wants credentials no matter what because you always have a role in real Lambda, so I guess we make it required