Fix postgresql JDBC_URL without suffix '/'

[zhoney]

fixed: #888

Change-Id: I2291fed3f6c4acbe94ebc42c1449594aa808a1f4

[codecov]

Codecov Report

Merging #891 into master will decrease coverage by 0.03%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master     #891      +/-   ##
============================================
- Coverage     72.13%   72.10%   -0.04%     
  Complexity     4456     4456              
============================================
  Files           287      287              
  Lines         21227    21227              
  Branches       2992     2992              
============================================
- Hits          15313    15306       -7     
- Misses         4401     4408       +7     
  Partials       1513     1513              

Impacted Files	Coverage Δ	Complexity Δ
...u/hugegraph/backend/store/mysql/MysqlSessions.java	63.01% <66.66%> (ø)	24.00 <0.00> (ø)
...om/baidu/hugegraph/api/filter/ExceptionFilter.java	62.36% <0.00%> (-4.31%)	0.00% <0.00%> (ø%)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	80.65% <0.00%> (-0.40%)	180.00% <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 f1f1d0e...ea5af97. Read the comment docs.