disable head request with getPart for the first part (assumption: obj… #3034

Job	Run time
downstream	9m 36s
clang-sanitizers (,thread)	11m 28s
byo-crypto	2m 50s
clang-sanitizers (,address,undefined)	11m 10s
linux-compat (manylinux1-x64)	10m 3s
linux-compiler-compat (clang-3)	10m 3s
linux-debug	10m 11s
linux-compat (manylinux1-x86)	13m 35s
linux-compiler-compat (clang-6)	10m 3s
linux-shared-libs	10m 34s
linux-compat (manylinux2014-x64)	9m 44s
linux-compiler-compat (clang-8)	10m 1s
linux-compat (manylinux2014-x86)	9m 44s
linux-compiler-compat (clang-9)	10m 3s
linux-compat (al2-x64)	8m 57s
linux-compiler-compat (clang-10)	10m 3s
osx	9m 50s
linux-compiler-compat (clang-11)	10m 4s
windows	3m 45s
linux-compiler-compat (gcc-4.8)	9m 48s
linux-compiler-compat (gcc-5)	10m 2s
windows-app-verifier	5m 15s
linux-compiler-compat (gcc-6)	10m 3s
windows-shared-libs	4m 33s
linux-compiler-compat (gcc-7)	10m 3s
windows-vc14 (x86)	3m 26s
linux-compiler-compat (gcc-8)	10m 2s
windows-vc14 (x64)	3m 27s
	4h 8m 23s

Provide feedback