appended clang 3.9 #907

Job	Run time
Package builder app	5s
Unit Tests	5s
Clean up previous branch jobs	11s
compilers (clang-9)	53s
compilers (clang-10)	35s
compilers (clang-11)	43s
aws-c-cal (manylinux1-x86)	2m 19s
Sanity Test (ubuntu-22.04)	2m 8s
compilers (gcc-7)	40s
aws-c-cal (manylinux1-x64)	2m 20s
Sanity Test (macos-11)	2m 53s
compilers (gcc-8)	43s
aws-c-cal (manylinux2014-x86)	2m 34s
Sanity Test (macos-12)	2m 40s
compilers (gcc-9)	27s
aws-c-cal (manylinux2014-x64)	2m 42s
Sanity Test (windows-2022)	3m 32s
compilers (gcc-10)	39s
aws-c-cal (manylinux2014-aarch64)	23m 23s
compilers (gcc-11)	1m 42s
aws-c-cal (musllinux-1-1-aarch64)	26m 16s
aws-c-cal (musllinux-1-1-x64)	3m 2s
cross_compile (linux-armv6)	10m 21s
cross_compile (linux-armv7)	10m 27s
downstream (aws-c-mqtt)	10m 55s
cross_compile (linux-armv8)	9m 52s
release_notes (aws-crt-python)	39s
downstream (aws-c-http)	3m 13s
release_notes (aws-iot-device-sdk-python-v2)	7s
downstream (aws-crt-python)	5m 28s
swift (swift-5-ubuntu-x64)	48s
downstream (aws-crt-cpp)	5m 59s
swift (swift-5-centos-x64)	47s
downstream (aws-crt-java)	7m 50s
swift (swift-5-al2-x64)	7m 54s
downstream (aws-crt-nodejs)	5m 56s
std-compat (gcc-8, c++11)	7m 32s
std-compat (gcc-8, c++14)	6m 41s
std-compat (gcc-8, c++17)	9m 7s
std-compat (gcc-8, c++2a)	6m 44s
std-compat (clang-9, c++11)	7m 16s
std-compat (clang-9, c++14)	7m 24s
std-compat (clang-9, c++17)	7m 55s
std-compat (clang-9, c++2a)	6m 19s
All Sanity Tests passed	1s
	3h 39m 47s

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