fix(inputs/aerospike): Statistics query bug

[aratik711]

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• Updated associated README.md.
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resolves #10929

In the aerospike go client v5 onwards they moved RequestNodeStats to RequestInfo
#10604
During this PR, the "statistics" command wasn't passed here

The same has been corrected in this PR.

[aratik711]

@Hipska updated please check

[telegraf-tiger]

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amd64.deb	aarch64.rpm	darwin_amd64.tar.gz	windows_amd64.zip
arm64.deb	armel.rpm	darwin_arm64.tar.gz	windows_i386.zip
armel.deb	armv6hl.rpm	freebsd_amd64.tar.gz
armhf.deb	i386.rpm	freebsd_armv7.tar.gz
i386.deb	ppc64le.rpm	freebsd_i386.tar.gz
mips.deb	riscv64.rpm	linux_amd64.tar.gz
mipsel.deb	s390x.rpm	linux_arm64.tar.gz
ppc64el.deb	x86_64.rpm	linux_armel.tar.gz
riscv64.deb		linux_armhf.tar.gz
s390x.deb		linux_i386.tar.gz
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