ApiFutures.addCallback() now requires a third argument (a non-direct executor). 

Ref: https://github.com/googleapis/api-common-java/blob/master/src/main/java/com/google/api/core/ApiFutures.java

* Regenerate vision client

* vision proto libraries need com.google.api:api-common compile dependency

Unsets empty list of retry status codes

Unsets empty list of no-retry status codes

* Move BOM info to right after Quick Start

* split version management

* change to old version combinations

* Update README.md

* Add GapicSpannerRpc stub (#3016)

* spanner: implement partitionRead (#3022)

* spanner: implement LRO methods using GAPIC stub (#3039)

* Add implementation to:listInstances, listInstanceConfigs, listDatabases, getInstance, getInstanceConfigs, getDatabase, dropDatabase, deleteInstance, getDatabaseDdl  (#3043) 

* spanner: move admin clients to GAPIC stub (#3067)

* Spanner: migrate all unary call methods to gapic and inject headers (#3112)

* Spanner: migrate streaming methods to gapic (#3139)

* Spanner gapic migration lro methods (#3166)

Migrate longrunning methods to GAPIC including: createDatabase, updateDatabaseDdl, createInstance, and updateInstance.

* Make ChannelPool work (#3258)

* Spanner gapic migration error augmentation with interceptor (#3304)

* Add interceptors (#3346)

* Clean up Spanner before merging to master (#3362)

* Spanner Gapic Migration: fix updateDatabaseDdl (#3403)

Adds interconnect features

Add excluded_fields to BigQueryOptions

Also, update the README to reflect recent update to pseudoDirs.

* bump checkstyle version to build on Java 9

The version of checkstyle we currently use uses tools.jar
which is removed from Java 9 and above as part of Project Jigsaw.
This commit uses a newer version of checkstyle that does not
use tools.jar.

Running `mvn checkstyle:checkstyle` succeeded.�

* maybe this will be java 7 compat...?

* pubsub: use GAPIC stub

* fix merge

* pr comment

fallback match should be last

* Stop leaving leftover buckets in ITGcsNIO

This integration test now deletes all the buckets it creates.

The issue was that requester-pays buckets couldn't be deleted by the
existing code. This PR updates RemoteStorageHelper so it can be given a
userProject for requester-pays buckets.

* Don't set userProject if empty, add test

RemoteStorageHelper now doesn't set the userProject option if it's
empty. Also, added testForceDeleteRetriesWithUserProject unit test.

The new field was added to the Stackdriver LogEntry protocol buffer message in
googleapis/googleapis@7b34e5a#diff-a51916a680df6453b6d86586cd7d63f9R149.

* Add synth.py for generating cloud scheduler client

* Add generated cloud scheduler code

* Fix proto/grpc artifact names

* Add versions and pom.xml files

* Update list of stub packages in google-cloud-clients

* Add README

…#3900)

This allows customers to easily interact with the bigtable emulator. Currently the Bigtable emulator is implemented in go. It is a fairly complex bit of code that would be very difficult to replicate in java. This makes it very difficult for users to interact with it in a java project. This PR attempts to make things easier for the user by wrapping the golang emulator in a jar and providing a JUnit rule to simplify lifecycle management of the emulator.

It's implemented as 2 artifacts:
- google-cloud-gcloud-maven-plugin: a maven plugin that can download artifacts from the gcloud sdk repo and add them as resources to a jar. This avoids the need to check in binaries into google-cloud-java and makes sure that the binaries are up to date.
- google-cloud-bigtable-emulator: This uses the maven plugin to bundle the bigtable emulator in a jar and adds a java wrapper around the binary. The wrapper was extracted from the existing bigtable client integration tests: https://github.com/googleapis/google-cloud-java/blob/master/google-cloud-clients/google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/it/env/Emulator.java

…4344)

* Update maven-surefire-plugin to 3.0.0-M3 to fix Java 8 classloader

* Update failsafe plugin to 3.0.0-M3 too

* Specify maven-surefire-plugin version in bigtable-emulator

BREAKING CHANGE: The `areTimestampsInSnapshotsEnabled()` setting is now enabled
by default so timestamp fields read from a `DocumentSnapshot` will be returned
as `Timestamp` objects instead of `Date`. Any code expecting to receive a
`Date` object must be updated.

* Regenerate asset client

* Regenerate automl client

* Regenerate bigquerydatatransfer client

* Regenerate bigquerystorage client

* Regenerate bigtable client

* Regenerate container client

* Regenerate containeranalysis client

* Regenerate dataproc client

* Regenerate dialogflow client

* Regenerate dlp client

* Regenerate errorreporting client

* Regenerate iamcredentials client

* Regenerate iot client

* Regenerate kms client

* Regenerate language client

* Regenerate logging client

* Regenerate monitoring client

* Regenerate os-login client

* Regenerate pubsub client

* Regenerate redis client

* Regenerate securitycenter client

* Regenerate speech client

* Regenerate tasks client

* Regenerate trace client

* Regenerate video-intelligence client

* Regenerate websecurityscanner client

* tableAdmin sample and tests

* comments added

* files renamed and other edits

* some changes in TableAdminExample and tests

* fixed timestamp to base 16

* separate properties for bigtable.project and bigtable.instance

This is required for v1 and accepted in v1beta1.

Port of googleapis/nodejs-firestore@52c7381

* Removing some unused dependencies
Also, reducing scope of auto-value to provided.

* Restoring Firestore auto-value

* Removing more instances of easymock.

* Removing non-deprecated uses of joda time.
This works towards #3482

* Update pom.xml

* Ran `mvn com.coveo:fmt-maven-plugin:format`

* Fixing a bad merge

* fixing some deprecation warnings

* updated comment

* Fix Location configurable from BigQueryOptions

* modified code

* modified code and add test case

* removed unused location

* Bigtable: make row & cell ordering more consistent.

* RowCells should always be ordered in lexicographically by family, then qualifier and finally by reverse chronological order
* Although rows will always be ordered lexicographically by row key, they should not implement Comparable to avoid confusion when compareTo() == 0 and equals() is false. Instead that ordering was moved to a separate comparator.

* Add helpers to filter cells by family & qualifier

* tweaks

* code style

* code style