chore(deps): add a few missing artifacts to the deps bom (#143)

* expand google-cloud-core to a bom, so that we fix google-cloud-core-http's version in the hbase adapter
* google-http-client-bom, it's a transitive dep for google-cloud-bigtable and a direct dep of the hbase adaptor
* opencensus-* add a bunch more relevant opencensus deps. There is no opencensus-bom, so we enumerate any that might be useful

Author: igorbernstein2

google-cloud-bigtable-deps-bom/pom.xml

@@ -78,6 +78,7 @@
     <google.common-protos.version>1.17.0</google.common-protos.version>
     <google.core.version>1.92.1</google.core.version>
     <google.auth.version>0.19.0</google.auth.version>
+    <google-http-client.version>1.34.0</google-http-client.version>
     <!-- make sure to update the grpc version in README -->
     <grpc.version>1.26.0</grpc.version>
     <guava.version>28.2-android</guava.version>
@@ -103,13 +104,27 @@
         <type>pom</type>
         <scope>import</scope>
       </dependency>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>google-cloud-core-bom</artifactId>
+        <version>${google.core.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
       <dependency>
         <groupId>com.google.guava</groupId>
         <artifactId>guava-bom</artifactId>
         <version>${guava.version}</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
+      <dependency>
+        <groupId>com.google.http-client</groupId>
+        <artifactId>google-http-client-bom</artifactId>
+        <version>${google-http-client.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
       <dependency>
         <groupId>io.grpc</groupId>
         <artifactId>grpc-bom</artifactId>
@@ -144,16 +159,6 @@
         <artifactId>auto-value-annotations</artifactId>
         <version>${autovalue.version}</version>
       </dependency>
-      <dependency>
-        <groupId>com.google.cloud</groupId>
-        <artifactId>google-cloud-core</artifactId>
-        <version>${google.core.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>com.google.cloud</groupId>
-        <artifactId>google-cloud-core-grpc</artifactId>
-        <version>${google.core.version}</version>
-      </dependency>
       <dependency>
         <groupId>com.google.errorprone</groupId>
         <artifactId>error_prone_annotations</artifactId>
@@ -174,11 +179,48 @@
         <artifactId>protobuf-java-util</artifactId>
         <version>${protobuf.version}</version>
       </dependency>
+
       <dependency>
         <groupId>io.opencensus</groupId>
         <artifactId>opencensus-api</artifactId>
         <version>${opencensus.version}</version>
       </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-contrib-grpc-util</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-contrib-http-util</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-contrib-zpages</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-exporter-stats-stackdriver</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-exporter-trace-stackdriver</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-impl</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-impl-core</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+
       <dependency>
         <groupId>javax.annotation</groupId>
         <artifactId>javax.annotation-api</artifactId>