[bcm sai] upgrade to sai version 3.1.3.4-3 (#1451)

- included bcm config files missed between 3.0 and 3.1.

Author: yxieca

platform/broadcom/sai.mk

@@ -1,9 +1,9 @@
-BRCM_SAI = libsaibcm_3.1.3.4-2_amd64.deb
-$(BRCM_SAI)_URL = "https://sonicstorage.blob.core.windows.net/packages/libsaibcm_3.1.3.4-2_amd64.deb?sv=2015-04-05&sr=b&sig=EZRvr20FafC1pB3SLyA4K0cAsbbiNGPkuCuvPEgOtmU%3D&se=2031-11-01T00%3A33%3A10Z&sp=r"
+BRCM_SAI = libsaibcm_3.1.3.4-3_amd64.deb
+$(BRCM_SAI)_URL = "https://sonicstorage.blob.core.windows.net/packages/libsaibcm_3.1.3.4-3_amd64.deb?sv=2015-04-05&sr=b&sig=B3xLAq0vI8k0HLt740baKtMxgaAQUkenS63erudlzAU%3D&se=2031-11-09T22%3A35%3A16Z&sp=r"
 
-BRCM_SAI_DEV = libsaibcm-dev_3.1.3.4-2_amd64.deb
+BRCM_SAI_DEV = libsaibcm-dev_3.1.3.4-3_amd64.deb
 $(eval $(call add_derived_package,$(BRCM_SAI),$(BRCM_SAI_DEV)))
-$(BRCM_SAI_DEV)_URL = "https://sonicstorage.blob.core.windows.net/packages/libsaibcm-dev_3.1.3.4-2_amd64.deb?sv=2015-04-05&sr=b&sig=SXh77LQCpwF6e65rU0RX4zMSNMlAHh1iSjsLktrE360%3D&se=2031-11-01T00%3A32%3A36Z&sp=r"
+$(BRCM_SAI_DEV)_URL = "https://sonicstorage.blob.core.windows.net/packages/libsaibcm-dev_3.1.3.4-3_amd64.deb?sv=2015-04-05&sr=b&sig=iIVQQNj5gYGlDr8zP9YQXSaHs0o0NziijMDRFyKMfW8%3D&se=2031-11-09T22%3A34%3A14Z&sp=r"
 
 SONIC_ONLINE_DEBS += $(BRCM_SAI) $(BRCM_SAI_DEV)
 $(BRCM_SAI_DEV)_DEPENDS += $(BRCM_SAI)