docs: add --run-cache for fetch/pull/push (#1481)

Related to #1289

content/docs/command-reference/fetch.md

@@ -7,7 +7,9 @@ Get tracked files or directories from
 
 ```usage
 usage: dvc fetch [-h] [-q | -v] [-j <number>]
-                 [-r <name>] [-a] [-T] [-d] [-R] [--all-commits]
+                 [-r <name>] [-a] [-T]
+                 [--all-commits] [-d] [-R]
+                 [--run-cache]
                  [targets [targets ...]]
 
 positional arguments:
@@ -77,6 +79,9 @@ or `-T` options are used).
   [remote storage](/doc/command-reference/remote) to fetch from (see
   `dvc remote list`).
 
+- `--run-cache` - downloads all available history of stage runs from the remote
+  repository.
+
 - `-d`, `--with-deps` - determines files to download by tracking dependencies to
   the `targets`. If none are provided, this option is ignored. By traversing all
   stage dependencies, DVC searches backward from the target stages in the

content/docs/command-reference/pull.md

@@ -95,6 +95,9 @@ reflinks or hardlinks to put it in the workspace without copying. See
   [remote storage](/doc/command-reference/remote) to pull from (see
   `dvc remote list`).
 
+- `--run-cache` - downloads all available history of stage runs from the remote
+  repository.
+
 - `-j <number>`, `--jobs <number>` - number of threads to run simultaneously to
   handle the downloading of files from the remote. The default value is
   `4 * cpu_count()`. For SSH remotes, the default is just `4`. Using more jobs

content/docs/command-reference/push.md

@@ -6,8 +6,8 @@ Upload tracked files or directories to
 ## Synopsis
 
 ```usage
-usage: dvc push [-h] [-q | -v] [-j <number>]
-                [-r <name>] [-a] [-T] [-d] [-R] [--all-commits]
+usage: dvc push [-h] [-q | -v] [-j <number>] [-r <name>] [-a] [-T]
+                [--all-commits] [-d] [-R] [--run-cache]
                 [targets [targets ...]]
 
 positional arguments:
@@ -102,6 +102,9 @@ the target [stage files](/doc/command-reference/run), through the corresponding
   [remote storage](/doc/command-reference/remote) to push from (see
   `dvc remote list`).
 
+- `--run-cache` - uploads all available history of stage runs to the remote
+  repository.
+
 - `-j <number>`, `--jobs <number>` - number of threads to run simultaneously to
   handle the uploading of files from the remote. The default value is
   `4 * cpu_count()`. For SSH remotes, the default is just `4`. Using more jobs