Disable thread safety analysis checks for connectedhomeip

[andy31415]

This fixes compilation errors of the form:

...
Step #3 - "compile-centipede-address-x86_64": �[1m../../src/platform/Linux/ConnectivityManagerImpl.h:211:46: �[0m�[0;1;31merror: �[0m�[1m'guarded_by' attribute requires arguments whose type is annotated with 'capability' attribute; type here is 'std::mutex' [-Werror,-Wthread-safety-attributes]�[0m
Step #3 - "compile-centipede-address-x86_64":     static GDBusWpaSupplicant mWpaSupplicant CHIP_GUARDED_BY(mWpaSupplicantMutex);
Step #3 - "compile-centipede-address-x86_64": �[0;1;32m                                             ^
Step #3 - "compile-centipede-address-x86_64": �[0m�[1m../../src/system/SystemMutex.h:75:49: �[0m�[0;1;30mnote: �[0mexpanded from macro 'CHIP_GUARDED_BY'�[0m
Step #3 - "compile-centipede-address-x86_64": #define CHIP_GUARDED_BY(x) CHIP_TSA_ATTRIBUTE__(guarded_by(x))
Step #3 - "compile-centipede-address-x86_64": �[0;1;32m                                                ^
Step #3 - "compile-centipede-address-x86_64": �[0m1 error generated.

as reported in https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58531

Also updated the dockerfile to checkout less things from CHIP so that the checkout step is faster.

[jonathanmetzman]

lgtm

[jonathanmetzman]

lgtm