Reduce storage requirements for webrtc Canary

[lherman-cs]

As of now, webrtc canary depends on AWS SDK and KVS Webrtc SDK. Since AWS SDK is monorepo, its size is about 500 MB.

To reduce this storage requirement, there are currently 2 solutions:

1. Create a static build and remove everything except the canary binary

This approach is the most preferable, but static builds are flaky, it's consistent across platforms. For example, OpenSSL static build fails only on ubuntu 18.04 not on other versions of ubuntu.

/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_lock_new':
threads_pthread.c:(.text+0x45): undefined reference to `pthread_rwlock_init'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_read_lock':
threads_pthread.c:(.text+0x75): undefined reference to `pthread_rwlock_rdlock'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_write_lock':
threads_pthread.c:(.text+0x95): undefined reference to `pthread_rwlock_wrlock'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_unlock':
threads_pthread.c:(.text+0xb5): undefined reference to `pthread_rwlock_unlock'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_lock_free':
threads_pthread.c:(.text+0xda): undefined reference to `pthread_rwlock_destroy'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_run_once':
threads_pthread.c:(.text+0x105): undefined reference to `pthread_once'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_init_local':
threads_pthread.c:(.text+0x125): undefined reference to `pthread_key_create'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_set_local':
threads_pthread.c:(.text+0x157): undefined reference to `pthread_setspecific'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_cleanup_local':
threads_pthread.c:(.text+0x177): undefined reference to `pthread_key_delete'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `openssl_init_fork_handlers':
threads_pthread.c:(.text+0x1d3): undefined reference to `pthread_once'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `fork_once_func':
threads_pthread.c:(.text+0x16): undefined reference to `pthread_atfork'
/tmp/amazon-kinesis-video-streams-webrtc-sdk-c/open-source/lib/libcrypto.a(threads_pthread.o): In function `CRYPTO_THREAD_get_local':
threads_pthread.c:(.text+0x143): undefined reference to `pthread_getspecific'

OpenSSL should include pthread as a part of binary (either dynamic or static link to pthread), but it somehow didn't get linked.

2. Create a dynamic build and remove just the source codes

This approach is OK, but we need to create a script that can understand the library dependencies and make sure that we don't end up deleting them. A tool like ldd will tell us these dependencies, but it gets ugly pretty quickly.