IpsecPeerConfig: Require valid local address

[corinaminer]

Building the IPsec topology can fail if we create peer configs with invalid (Ip.AUTO) local addresses.

[batfish-bot]

This change is 

[codecov]

Codecov Report

Merging #6581 (7e26ae2) into master (5f3a9b4) will decrease coverage by 0.02%.
The diff coverage is 27.94%.

@@             Coverage Diff              @@
##             master    #6581      +/-   ##
============================================
- Coverage     73.40%   73.38%   -0.03%     
+ Complexity    35763    35759       -4     
============================================
  Files          2838     2838              
  Lines        144327   144380      +53     
  Branches      17465    17475      +10     
============================================
- Hits         105949   105948       -1     
- Misses        29978    30018      +40     
- Partials       8400     8414      +14     

Impacted Files	Coverage Δ	Complexity Δ
...ish/representation/arista/AristaConfiguration.java	58.25% <0.00%> (-0.04%)	178.00 <0.00> (ø)
...org/batfish/representation/arista/Conversions.java	21.55% <0.00%> (-0.19%)	30.00 <0.00> (ø)
.../representation/cisco_xr/CiscoXrConfiguration.java	52.75% <0.00%> (-0.04%)	109.00 <0.00> (ø)
...sh/representation/cisco_xr/CiscoXrConversions.java	29.58% <0.00%> (-0.51%)	49.00 <0.00> (ø)
...batfish/representation/vyos/VyosConfiguration.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...in/java/org/batfish/datamodel/IpsecPeerConfig.java	92.00% <33.33%> (-8.00%)	6.00 <0.00> (ø)
...batfish/representation/cisco/CiscoConversions.java	87.45% <59.09%> (-0.82%)	190.00 <7.00> (+1.00)	⬇️
...h/representation/juniper/JuniperConfiguration.java	88.42% <60.00%> (-0.03%)	464.00 <0.00> (ø)
...tfish/representation/cisco/CiscoConfiguration.java	86.60% <100.00%> (+<0.01%)	507.00 <1.00> (+1.00)
...g/batfish/datamodel/flow/IncomingSessionScope.java	84.61% <0.00%> (-15.39%)	7.00% <0.00%> (-1.00%)
... and 12 more

[progwriter]

Reviewed 13 of 13 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved