Fan-out lambda missing lastAccess attribute

[jmhummel]

The lastAccess attribute is only set on the child invocations, but not on the original parent, which leads to both lastAccessed and lastAccessedSeconds fields appearing null on warm lambdas

[coveralls]

Pull Request Test Coverage Report for Build 15

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 14:	0.0%
Covered Lines:	32
Relevant Lines:	32

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 15

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 14:	0.0%
Covered Lines:	32
Relevant Lines:	32

---

💛 - Coveralls

[jmhummel]

Screenshot from CloudWatch:

[jmhummel]

More recent screenshot after schedule has run for a while, showing that only lambdas with count > 1 contain the lastAccessed and lastAccessedSeconds fields in their log output:

[jmhummel]

@jeremydaly Could you review this PR when you get a chance?

[jeremydaly]

Yes, sorry for the delay. I'll look at it tonight. Thanks for submitting it.

[jeremydaly]

I've merged this in and will add it to the next version.