bump up common 1.7.8

[javeme]

upgrade include: guava 25.1 and cassandra-driver 3.6.0

Change-Id: Iaa420dc5233887a5b7054d7ea9f683cb5627903c

[javeme]

ci error with cassandra:

[ERROR] Tests run: 669, Failures: 1, Errors: 0, Skipped: 16, Time elapsed: 453.032 s <<< FAILURE! - in com.baidu.hugegraph.core.CoreTestSuite
[ERROR] testAddEdgeWithTtlAndTtlStartTime(com.baidu.hugegraph.core.EdgeCoreTest)  Time elapsed: 1.806 s  <<< FAILURE!
java.lang.AssertionError
	at com.baidu.hugegraph.core.EdgeCoreTest.testAddEdgeWithTtlAndTtlStartTime(EdgeCoreTest.java:648)

ci error with pgsql:

[INFO] Running com.baidu.hugegraph.api.ApiTestSuite
[ERROR] Tests run: 41, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 17.186 s <<< FAILURE! - in com.baidu.hugegraph.api.ApiTestSuite
[ERROR] com.baidu.hugegraph.api.MetricsApiTest  Time elapsed: 0.488 s  <<< ERROR!
com.baidu.hugegraph.HugeException: Failed to list vertexlabels

[codecov]

Codecov Report

Merging #1058 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1058      +/-   ##
============================================
- Coverage     69.17%   69.15%   -0.02%     
+ Complexity     5445     5437       -8     
============================================
  Files           329      328       -1     
  Lines         26426    26400      -26     
  Branches       3776     3773       -3     
============================================
- Hits          18281    18258      -23     
+ Misses         6361     6358       -3     
  Partials       1784     1784              

Impacted Files	Coverage Δ	Complexity Δ
...com/baidu/hugegraph/api/gremlin/GremlinClient.java	90.90% <ø> (ø)	0.00 <0.00> (ø)
...a/com/baidu/hugegraph/backend/query/Condition.java	77.65% <0.00%> (-0.37%)	32.00% <0.00%> (ø%)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	79.73% <0.00%> (-0.12%)	192.00% <0.00%> (ø%)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 42cf638...e28e5cb. Read the comment docs.