pgAdmin 4 commit: Use the same cursor object of a connection object onl

Use the same cursor object of a connection object only from the same
server.

Current implementation keeps the cursor object in the 'g' (current
request context) object identified by the connection-id.
But - it fails to identify a different connection object request, when
we have same database name in different database server, it does not
able to identify it as separate request, Hence - now we will use
server-id qualified identifier for the same object.

Thanks Neel Patel for pointing out the issue.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=7f790a7f4965bb0f0908127be2f554b5a4323a60

Modified Files
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web/pgadmin/utils/driver/psycopg2/__init__.py | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)