[Arista] Change port layout for Arista-7050CX3-32S-C28S4

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#### Why I did it
The 10g ports were 5, 11, 21, 27. They are changed to 15, 16, 17, 18.
##### Work item tracking
- Microsoft ADO **(number only)**:

#### How I did it

#### How to verify it
Tested that all the interfaces are up.

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Author: mssonicbld

device/arista/x86_64-arista_7050cx3_32s/Arista-7050CX3-32S-C28S4/config.bcm.j2

@@ -401,7 +401,7 @@ phy_chain_tx_polarity_flip_physical{97.0}=0x1
 phy_chain_tx_polarity_flip_physical{98.0}=0x1
 phy_chain_tx_polarity_flip_physical{99.0}=0x1
 portmap_103=101:100
-portmap_107=105:10
+portmap_107=105:100
 portmap_1=1:100
 portmap_111=109:100
 portmap_115=113:100
@@ -411,25 +411,25 @@ portmap_127=125:100
 portmap_130=128:10:m
 portmap_13=13:100
 portmap_17=17:100
-portmap_21=21:10
+portmap_21=21:100
 portmap_25=25:100
 portmap_29=29:100
 portmap_33=33:100
 portmap_37=37:100
-portmap_41=41:10
+portmap_41=41:100
 portmap_45=45:100
 portmap_49=49:100
 portmap_53=53:100
 portmap_5=5:100
-portmap_57=57:100
-portmap_61=61:100
+portmap_57=57:10
+portmap_61=61:10
 portmap_66=129:10:m
-portmap_67=65:100
-portmap_71=69:100
+portmap_67=65:10
+portmap_71=69:10
 portmap_75=73:100
 portmap_79=77:100
 portmap_83=81:100
-portmap_87=85:10
+portmap_87=85:100
 portmap_91=89:100
 portmap_95=93:100
 portmap_9=9:100
@@ -505,34 +505,34 @@ serdes_preemphasis_5=0x104105
 serdes_preemphasis_9=0x104105
 serdes_preemphasis_13=0x104105
 serdes_preemphasis_17=0xd3e05
-serdes_driver_current_21=0xe
-serdes_preemphasis_21=0x14410a
+serdes_preemphasis_21=0xd3e05
 serdes_preemphasis_25=0xd3e05
 serdes_preemphasis_29=0xb3403
 serdes_preemphasis_33=0xb3403
 serdes_preemphasis_37=0x93603
-serdes_driver_current_41=0xe
-serdes_preemphasis_41=0x14410a
+serdes_preemphasis_41=0x93603
 serdes_preemphasis_45=0x93503
 serdes_preemphasis_49=0x62e03
 serdes_preemphasis_53=0x63003
-serdes_preemphasis_57=0x63003
-serdes_preemphasis_61=0x62e03
+serdes_driver_current_57=0xe
+serdes_preemphasis_57=0x410a
+serdes_driver_current_61=0xe
+serdes_preemphasis_61=0x410a
 serdes_driver_current_66=0xe
 serdes_preemphasis_66=0x102804
-serdes_preemphasis_67=0x62e03
-serdes_preemphasis_71=0x63003
+serdes_driver_current_67=0xe
+serdes_preemphasis_67=0x410a
+serdes_driver_current_71=0xe
+serdes_preemphasis_71=0x410a
 serdes_preemphasis_75=0x63003
 serdes_preemphasis_79=0x62e03
 serdes_preemphasis_83=0x93503
-serdes_driver_current_87=0xe
-serdes_preemphasis_87=0x14410a
+serdes_preemphasis_87=0x93603
 serdes_preemphasis_91=0x93603
 serdes_preemphasis_95=0x93603
 serdes_preemphasis_99=0xb3403
 serdes_preemphasis_103=0xb3403
-serdes_driver_current_107=0xe
-serdes_preemphasis_107=0x14410a
+serdes_preemphasis_107=0xd3e05
 serdes_preemphasis_111=0xd3e05
 serdes_preemphasis_115=0xd3e05
 serdes_preemphasis_119=0x104105

device/arista/x86_64-arista_7050cx3_32s/Arista-7050CX3-32S-C28S4/port_config.ini

@@ -3,29 +3,29 @@ Ethernet0       1,2,3,4           Ethernet1/1    1     100000
 Ethernet4       5,6,7,8           Ethernet2/1    2     100000
 Ethernet8       9,10,11,12        Ethernet3/1    3     100000
 Ethernet12      13,14,15,16       Ethernet4/1    4     100000
-Ethernet16      21                Ethernet5/1    5     10000
+Ethernet16      21,22,23,24       Ethernet5/1    5     100000
 Ethernet20      17,18,19,20       Ethernet6/1    6     100000
 Ethernet24      25,26,27,28       Ethernet7/1    7     100000
 Ethernet28      29,30,31,32       Ethernet8/1    8     100000
 Ethernet32      37,38,39,40       Ethernet9/1    9     100000
 Ethernet36      33,34,35,36       Ethernet10/1  10     100000
-Ethernet40      41                Ethernet11/1  11     10000
+Ethernet40      41,42,43,44       Ethernet11/1  11     100000
 Ethernet44      45,46,47,48       Ethernet12/1  12     100000
 Ethernet48      53,54,55,56       Ethernet13/1  13     100000
 Ethernet52      49,50,51,52       Ethernet14/1  14     100000
-Ethernet56      57,58,59,60       Ethernet15/1  15     100000
-Ethernet60      61,62,63,64       Ethernet16/1  16     100000
-Ethernet64      69,70,71,72       Ethernet17/1  17     100000
-Ethernet68      65,66,67,68       Ethernet18/1  18     100000
+Ethernet56      57                Ethernet15/1  15     10000
+Ethernet60      61                Ethernet16/1  16     10000
+Ethernet64      69                Ethernet17/1  17     10000
+Ethernet68      65                Ethernet18/1  18     10000
 Ethernet72      73,74,75,76       Ethernet19/1  19     100000
 Ethernet76      77,78,79,80       Ethernet20/1  20     100000
-Ethernet80      85                Ethernet21/1  21     10000
+Ethernet80      85,86,87,88       Ethernet21/1  21     100000
 Ethernet84      81,82,83,84       Ethernet22/1  22     100000
 Ethernet88      89,90,91,92       Ethernet23/1  23     100000
 Ethernet92      93,94,95,96       Ethernet24/1  24     100000
 Ethernet96      101,102,103,104   Ethernet25/1  25     100000
 Ethernet100     97,98,99,100      Ethernet26/1  26     100000
-Ethernet104     105               Ethernet27/1  27     10000
+Ethernet104     105,106,107,108   Ethernet27/1  27     100000
 Ethernet108     109,110,111,112   Ethernet28/1  28     100000
 Ethernet112     117,118,119,120   Ethernet29/1  29     100000
 Ethernet116     113,114,115,116   Ethernet30/1  30     100000