Fixed following SonarQube issues:

1. Method/Field names should comply with a naming convention.
 2. Conditionals should start on new lines

web/pgadmin/utils/driver/abstract.py

@@ -67,7 +67,7 @@ class BaseDriver(object):
         pass
 
     @abstractmethod
-    def gc(self):
+    def gc_timeout(self):
         pass
 
 

web/pgadmin/utils/driver/psycopg2/__init__.py

@@ -197,7 +197,7 @@ class Driver(BaseDriver):
                 str(sid) in self.managers[session.sid]:
             del self.managers[session.sid][str(sid)]
 
-    def gc(self):
+    def gc_timeout(self):
         """
         Release the connections for the sessions, which have not pinged the
         server for more than config.MAX_SESSION_IDLE_TIME.

web/pgadmin/utils/driver/psycopg2/server_manager.py

@@ -148,24 +148,24 @@ class ServerManager(object):
 
         return res
 
-    def ServerVersion(self):
+    def server_version(self):
         return self.ver
 
     @property
     def version(self):
         return self.sversion
 
-    def MajorVersion(self):
+    def major_version(self):
         if self.sversion is not None:
             return int(self.sversion / 10000)
         raise Exception(gettext("Information is not available."))
 
-    def MinorVersion(self):
+    def minor_version(self):
         if self.sversion:
             return int(int(self.sversion / 100) % 100)
         raise Exception(gettext("Information is not available."))
 
-    def PatchVersion(self):
+    def patch_version(self):
         if self.sversion:
             return int(int(self.sversion / 100) / 100)
         raise Exception(gettext("Information is not available."))