Add link requirement per sku before enabling traffic on a fap (#21865)

With the current fap initialization sequence, multiple faps in a modular system could come up with stand alone mode. This is not a recommended configuration. It might mess up the global clock and might ends up with traffic issue.
#21866

This change adds a required minimum number of links have to be ready before enabling traffic on a fap, which based on the guidance should be able to guarantee the faps in a modular system can form a proper topology.

Author: jfeng-arista

device/arista/x86_64-arista_7800r3_48cq2_lc/Arista-7800R3-48CQ2-C48/jr2-a7280cr3-32d4-40x100G.config.bcm

@@ -863,3 +863,5 @@ dma_desc_aggregator_enable_specific_MDB_FEC.BCM8869X=1
 sai_pfc_dlr_init_capability=0 
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=58
+appl_param_active_links_thr_low=1

device/arista/x86_64-arista_7800r3a_36d2_lc/Arista-7800R3A-36D2-C36/0/j2p-a7800r3a-36d-36x400G.config.bcm

@@ -1017,3 +1017,5 @@ xflow_macsec_secure_chan_to_num_secure_assoc_decrypt=2
 sai_pfc_dlr_init_capability=0
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=91
+appl_param_active_links_thr_low=1

device/arista/x86_64-arista_7800r3a_36d2_lc/Arista-7800R3A-36D2-C36/1/j2p-a7800r3a-36d-36x400G.config.bcm

@@ -1017,3 +1017,5 @@ xflow_macsec_secure_chan_to_num_secure_assoc_decrypt=2
 sai_pfc_dlr_init_capability=0
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=91
+appl_param_active_links_thr_low=1

device/arista/x86_64-arista_7800r3a_36d2_lc/Arista-7800R3A-36D2-C72/0/j2p-a7800r3a-36d-36x400G.config.bcm

@@ -1034,3 +1034,5 @@ xflow_macsec_secure_chan_to_num_secure_assoc_decrypt=4
 sai_pfc_dlr_init_capability=0
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=91
+appl_param_active_links_thr_low=1

device/arista/x86_64-arista_7800r3a_36d2_lc/Arista-7800R3A-36D2-C72/1/j2p-a7800r3a-36d-36x400G.config.bcm

@@ -1034,3 +1034,5 @@ xflow_macsec_secure_chan_to_num_secure_assoc_decrypt=4
 sai_pfc_dlr_init_capability=0
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=91
+appl_param_active_links_thr_low=1

device/arista/x86_64-arista_7800r3a_36d2_lc/Arista-7800R3A-36D2-D36/0/j2p-a7800r3a-36d-36x400G.config.bcm

@@ -1054,3 +1054,5 @@ xflow_macsec_secure_chan_to_num_secure_assoc_decrypt=4
 sai_pfc_dlr_init_capability=0
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=91
+appl_param_active_links_thr_low=1

device/arista/x86_64-arista_7800r3a_36d2_lc/Arista-7800R3A-36D2-D36/1/j2p-a7800r3a-36d-36x400G.config.bcm

@@ -1054,3 +1054,5 @@ xflow_macsec_secure_chan_to_num_secure_assoc_decrypt=4
 sai_pfc_dlr_init_capability=0
 sai_default_cpu_tx_tc=7
 sai_disable_srcmacqedstmac_ctrl=1
+appl_param_active_links_thr_high=91
+appl_param_active_links_thr_low=1

src/sonic-device-data/tests/permitted_list

@@ -353,3 +353,5 @@ flowtracker_ipfix_observation_domain_id
 flowtracker_num_unique_user_entry_keys
 sai_mmu_tc_to_pg_config
 sai_hostif_netif_iff_up_set
+appl_param_active_links_thr_high
+appl_param_active_links_thr_low