fix exceptions and errors for invalid inputs in cassandra execution dao

[apanicker-nflx]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 3268

• 23 of 23 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 70.253%

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Totals
Change from base Build 3256:	0.03%
Covered Lines:	10290
Relevant Lines:	14647

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💛 - Coveralls

[codecov]

Codecov Report

Merging #1366 into dev will decrease coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##                dev    #1366      +/-   ##
============================================
- Coverage     64.39%   64.39%   -0.01%     
+ Complexity     2851     2850       -1     
============================================
  Files           241      241              
  Lines         14324    14338      +14     
  Branches       1410     1410              
============================================
+ Hits           9224     9233       +9     
- Misses         4320     4325       +5     
  Partials        780      780

Impacted Files	Coverage Δ	Complexity Δ
...conductor/dao/cassandra/CassandraExecutionDAO.java	63.19% <100%> (+1.75%)	45 <2> (ø)	⬇️
.../java/com/netflix/conductor/service/Lifecycle.java	30% <0%> (-30%)	2% <0%> (-1%)
.../com/netflix/conductor/grpc/server/GRPCServer.java	78.57% <0%> (-14.29%)	4% <0%> (ø)

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